The advantages to being an officer are many. Pay is a big one. Low-to-mid enlisted members get paid next to nothing…Many junior enlisted personnel, especially with families, have to resort to assistance from welfare. I work on an AF base, and see this happen fairly often.
O-1’s (the lowest officer grade, 2nd Lieutenant or Ensign), get paid a lot more reasonably. You’d can expect to have about 8 years of enlisted service under your belt before you get paid what a 2Lt straight out of school makes. You won’t get rich being in the military, but officer pay is at least livable. DFAS Militay Pay table)
But you’re getting a BS, the only real prerequisite for becoming an officer. So there’s very little reason not to get a commission.
Officers are in positions of authority, and for someone with authority issues like myself, that sure beats starting out as an E-1 and having every single person you see telling you what to do all day long. The opportunity for officers to direct subordinates varies between the services.
You go in as a 2Lt in the Army, and you may well be put in charge of a platoon of 30 enlisted personnel, wherein you are on par with a lesser deity. On the other hand, in the AF, that structure is less common. I work in a building full of officers and civilians, and the Lts are the peons with no one to boss around. It’s a bit rank-heavy in my organization.
However, a lot of the time, enlisted personnel have more hands-on/exciting/dangerous jobs (however you care to look at it). Officers are often paper-pushing, desk-bound, keyboard-tapping professionals. Pilots are a notable exception, however. But they don’t call it the “Chair Force” for nothing.
Each service is different, and has varying job opportunities and different cultures. You’ll have to keep doing research to find the right fit. If you’re technical-minded, as the Comp Sci degree might indicate, the USAF might be a logical choice.
Also, many people would agree that the AF is the easiest service to handle. Physical fitness standards and basic training, for example, are somewhat more relaxed than those of its sister services. The Marines are thought of as tougher, and they do what it takes to maintain that image, which generally involves a lot more toture. The Army isn’t much different…plus they all have those damned berets, now. 
If I were to join, the AF would undoubtedly be my choice. I don’t think I could adapt as easily to the organizational climate of the Army or Marines. “Hoo-ah” is not in my vocabulary. And as for the Navy, I just don’t like the idea of being on a boat that much. I have a long naval tradition in my family, but it’s not for me.