In some places you won't get out alive if you don't tip.You TIP people?I can't afford 50's and 100's - stuck between singles, unless you keep your wallet well organised (and you need a lot of singles in there for tipping).
I met a girl in Maryland who paid a restuarant to be accepted as a server ( waitress ). The income from tips in this restuarant made it worthwhile to "buy" hours of work rather than be paid per hour in a restuarent with less affluent customers.