I didn't watch the show, but I've been told none of the cast of Friends seem to have any occupations.
Actually, they all had jobs.
Ross was a paleontologist.
Chandler was an accountant.
Joey was an actor.
Rachel was a retail buyer.
Monica was a chef/caterer.
Phoebe was a street performer.
However, I do confess they spend very little time doing any of these things and days can go by where they seem to sit around all day.
I'm more bothered by say Higgins from Magnum P.I. The millionaire with a military background but no information on how they got said money. Seems like a cop out when you need to explain something.