Very good points. That's why I prefer fast foods over most jobs .. these jobs are very well defined, there's no slack or lack of direction since everything has to be done and gone in 5 minutes. It's also very nice to give food to people. Even if you're sweating a lot for many hours, you don't accumulate a lot of negative stuff in your mind (unless bad boss, harassment).

Also very fair point about the fact that it's larger than work.. it's social-general.