Very surprised that people appear to eat out as much as they do, but I suspect that most of the posters are in the U.S, where there tends to be plenty of options within a relatively short distance.

Generally, we eat out every couple of weeks, with the odd takeaway (1-2 per week). Having said that, when I'm in university I tend to get lunch out pretty much all the time; most of the time I can't be bothered going to the hassle of preparing something decent the night before.

Admittedly, we would eat out more if there was more options available. Where I live, though, in the UK, there's only really chains and pubs within a reasonable distance. There's no point eating out when I can prepare something much better and cheaper at home. When in the U.S., however, we eat out at least once per day, there's just so many options!