Working in a place where food is constantly being served is something that you cannot and will not endure. Even if you were desperate for a job, you just couldn't do it to yourself. Besides which, you'd probably get fired after a week anyway. You would nibble off people's plates and eat their leftovers in plain sight of the customers because you just needed to eat something before you explode in an angry cloud. You'd also punch people who left perfectly good food on their plates because wasting is not to be tolerated on any level.