I’m on the road Mon - Fri for work. If I don’t eat out, I don’t eat. While my waistline would benefit, I don’t think it would help my already surly attitude. My coworkers might move from actively plotting to kill me to actually following-up on those plots.
Single person here. I almost always cook, or bring lunch in to work, unless I’m going out to dinner with friends (which happens less often than I’d like, given everyone’s schedule).
I’m often not in the mood to spend an hour or more getting dinner prepared when I get in from work. The solution was to cook up batches of food on Sunday to peck on through the week, or to freeze individual portions for later (especially soups). Then when I get home from work, I can pick whatever meal suits me, and usually I won’t have to do more cooking other than to make a little rice or pasta.
Another single who loves to cook. I cook up & freeze, so I can defrost leftovers for lunch. My goal is to eat as much of my own cooking as possible - and I do fairly well. I love the challenges of trying new recipes. I love being able to control the quality of the food I am eating by chosing the quality of the raw ingredients. My waist loves the fact that I can know the calorie/fat/fiber counts of anything I make, thanks to MasterCook.
I only go out to eat when I have people visiting me, or I am visiting other people.
Susan
I cook in a lot more than I eat out. I enjoy cooking, and unlike Draelin I have a dishwasher. 
I really enjoy trying new things in the kitchen, and I get really excited when I have an idea for a culinary experiment or get a recipe recommendation from someone, which contributes to the amount of time I spend cooking. The experiments don’t always turn out, but they do often enough to keep me feeling like cooking is play time rather than work. My friends certainly like coming over to taste what I’ve whipped up, too.
When I do eat out, it’s because I’m being social, or because I’ll be doing something else in the evening and need to fit in a meal between work and whatever it is (e.g. I have a rehearsal tonight for a play reading, so I won’t be able to salt-grill the lobster tail in my fridge until tomorrow: yum). I almost never eat out simply because I’d rather not cook.
Absolutely! When Mr. Neville and I were looking for an apartment, I made absolutely sure he knew that not having a dishwasher was a deal-breaker for any apartment we looked at. I doubt I would cook much, if at all, if I didn’t have a dishwasher.
Before I married Mrs. Stone, I rarely cooked at home. The awesome pizza/sub/wing shop two doors down, knew me by voice and exactly how I liked my meals. (There were about 5 things I’d get regularly, they just needed to know which one I was in the mood for that day.)
Since we married, we rarely eat out.
I live with my boyfriend. On Mon - Thurs we are each responsible for 2 nights (one person cooks, other person is responsible for clean up), on Friday we are on our own, Saturday night we go out to eat, usually someplace fairly nice, Sunday night we go out but it’s generally something cheap while we are running errands.
I usually eat in more than I eat out. I travel about 10 days a month and I get tired of eating out. Plus, restaurants don’t generally allow me to surf the web and channel surf while eating alone.
I’m suffering right now though because I’m traveling, busy at work, volunteering and trying to stay outside having fun until sunset. Starting the Sunday of Labor Day weekend I will finally be home for 6 days in a row. I hope it rains so that I can spend a night or two cooking and freezing.
whistlepig
When I first got divorced then I tried “fixing” more meals at home, (no great cooking skills here) but in a studio apartment without a proper kitchen, and a busy schedule, it’s gotten to near 100% eating out.
We eat in more than going out to eat I think.
We have dinner at home just about every night. We go out for dinner once, maybe twice, a month.
We do all eat lunches during the day - my son at school, my husband comes home for lunch about half of the time, and I either pack a lunch or go to the gym and eat a lipton soup thing at the office. I go out to eat lunch once every other week or so with co-workers or vendors.
We eat breakfast at home 2 or 3 days during the week, and we usually go out for breakfast on Saturday and out for lunch on Sunday.
I hardly ever eat out; only really on special occasions or emergencies; I also hardly ever buy in ready-prepared meals; more or less everything is prepared from ingredients.