I’m not doing a double major (i’ve considered it though) but alot of people in my area are and it depends alot on the two subjects and how related they are. Some subjects have alot of overlap, and some do not. Mechanical engineering and philosophy may have 90 of their 120 credit hours being totally different but two similiar subject (mathematics and physics, chemistry and biology, history and sociology, etc) may have 90-100 of their 120 in common. Plus doing two BA degrees will be quicker than two BS degrees.
/Loosens collar
/Sweats profusely
Hmm…
I did two at the same time - BA, majoring in English Literature, and BLaw. In Australia you must do another degree, either concurrently or before, when you are enrolled in a Law degree, so I did the concurrent bit. It was good because after a hard morning of Donaghue v Stevenson, you could drift off to a class on Lady Chatterley’s Lover.
HECS is my Friend!
I was flunking out of college, so I decided to to a BA in English. Once my grades were safe I realized that I would not get a decent job with just an English degree. So I picked up a BS in Computer Science. It took 5.25 years, but a lot of time was spent in internships and co-ops.
BA from the University of New South Wales, majoring in English, then a BCom from the University of Newcastle, NSW, done part-time about 10 years later, while working at the place. I did it because I was interested in law, and wantyed to study some without actually becoming a lawyer, and that was the easiest way to do it. (Studying a bit of accounting and economics was interesting too, in its own way).
Am doing exact same thing, only my BA will be in Linguistics, rather than Eng Lit. This way I’m saving at least a year to get to my law degree.
I have a B.A. in Journalism and another in Political Science, which I earned concurrently. I whipped through the Poli. Sci. one in five semesters, while I was doing the journalism degree (four years, total, but only part-time the last year). I figured that journalism alone wasn’t going to land me a job, so I’d better learn something useful. (Ok, I was 18, and I didn’t realize that political science wasn’t exactly a route to a career, or even a job.)
My career was in arts & entertainment journalism, specifically as a music critic and editor. So, while I now have more knowledge of political theory than anyone wants to hear, the poli. sci. was a useless degree for me. Then again, my first boss, the newspaper publisher, said he preferred English or history majors over journalism majors. So both of my degrees have now proven dead-ends, and I write fiction.
Such a fun use of those tens of thousands of dollars, though. :smack:
I’m currently finishing up my 2nd BS (in Electrical Engineering), I got my first degree in 1993. I went for a second in a different field since I had burned out my interest in my first subject the first time around and had no desire to do graduate school.
I’m really lucky in that my employer pays for additional higher education, and a free degree is hard to say no to. Additionally, because it’s free, I chose this time to go to a small expensive private school due to my disappointment with the large faceless beauracracy of a state university that I suffered through during my first degree.
The experience has been wonderful. In contrast to hating school when I went the first time, now I know all of my professors by name and have an average of 6-10 students in any class. Bliss. 
Yes, I have two Bachelor’s degrees, because I couldn’t do anything with a farging B.A. in Biology. My story is similar to dwyr’s, only without the falling-asleep-on-the-job part. I went back because I was at a dead-end career-wise, and needed some marketable skills. At the Uni I went to, Journalism and some Education and Business majors needed to pursue a double major in order to get the degree they wanted. Conversely, physics majors were specifically prevented from declaring a concurrent Mathematics degree, as the mathematics requirements for a B.S. in physics also fulfilled (or nearly did) the requirements for a B.S. in Mathematics.
Vlad/Igor
Got a BS in Marine Biology and, upon graduation, found out I could make more as a tailor than as a biologist. Tailoring turned into 15 years in retail, and the eventual realization that “corporate buyer” wasn’t what I wanted to do with my life.
Quit, cashed out my retirement, got a BA/MA/PhD in anthropology. I’m now working in the Educational Programs group at a national laboratory, and loving life.
I embarked on a second after having finished the first. I don’t know if this applies to what you’re asking - hope it helps.
My first degree was taken as I tired of the full-time college student life and yearned for groceries. After 5½ years at UT Austin, during which time I’d meandered a bit, I took stock of my academic career and saw several anthro and sociology credits, as well as three music courses, two years of physics and the related calculus courses, statistics, home ec, biology through molecular and a year of physiology, a business course or two as well as an economics class, spurious history classes beyond the required Texas and USA history, a couple of philosophy courses, chemistry from the get go through organic (and I worked as a chem dep’t. lab assistant for the analytical and quantitative courses), a pharmacology course, etc., and realized that my 36 hours of psychology credits were the easiest route to an honors degree.
Hunting for a job in the environment of 25 years ago, I soon realized that there was an inadequate supply of geophysicists for the then market. The company that hired me as a trainee realized this as well. They looked at my foundation in the hard sciences and decided they could “grow their own,” so to speak. They hired me and sent me back to school, at the University of Houston, to get a degree in geophysics as they taught me the real world stuff.
For the next several years I attended night and weekend classes, while working for this company. During the mid-'80s, the oil biz tanked. As I recall, somewhere around 400,000 jobs went to the ether. Few survivors, but I was one. While I’d completed somewhere around 24 hours of geology courses, linear algebra and another physics course, I was extremely dismayed, and punched the button, bailing from a differential equations course in the spring of 1986.
While I did later do one more geology course in 1995, I pretty much suspended trying for another degree back then.
Fortunately for me, the State Board that licenses geophysicists ruled that my unconventional educational traverse was sufficient to license me as such.
I’m lucky in that I stumbled into a career that is: 1.) pretty damn interesting, 2.) ultimately remunerative and 3.) kinda fun when you do well at it.
Although I didn’t complete the second degree, I did stab at it, and the results have been great. And, to answer the OP, I pursued it for economic gain. At the beginning I didn’t realize how much fun it would be.
I’ve got three bachelor’s degrees, but two of them are law degrees, LL.B. Technically, you don’t need to have any prior degree to enter the LL.B. program in Canada, but as a practical matter you pretty much have to have one.
I got the B.A. first (History major, Pol. Sci. minor), then got interested in law and went to law school. My first LL.B. is in common law, the second is in civil law.
Thanks for all the responses so far. I was contemplating doing another bachelor’s just because I wanted to learn more about another subject and I feel like my first degree was too heavy in my major (psychology). After my general education classes were finished, I didn’t know what else to take, so I just signing up for psychology classes. Me being the procrastinator that I am, I usually ended up taking more psych classes then I meant to, after all the interesting classes in other areas were closed. I thought about grad school, but decided that I don’t have what it takes to get a phD in psych, but don’t have enough of a background in any other area. Also grad school is apparently a lot of work, who knew? 
I think I’d get a second degree in history or maybe anthropology. Or perhaps humanities, that’s nice and general. I realize none of these degrees will lead to a straightforward career and probably not even to a decent job (at least not right away), but I figure I’m young and I have plenty of time to be practical later.