To be fair, I worked nearly full-time for several years (37.5 hours per week, government job which also had a ton of paid time off) and then I've been back in school for the last couple years, which pays me a stipend. I also work part-time as a software developer. But, basically, I just don't have a ton of expenses (I don't own a car, I have lived in cheaper areas, I have no children). I will likely end up with a full-time job in the near-ish future. If I had it my way, I would always work part-time, but it is quite difficult to find good part-time work, and that is sad.
Full-time is generally 40 hours per week in the US, although there are always exceptions. The vast majority of "office" jobs, however, insist on 40 hours per week.
