People depend on their tips to make a living. People that are waiters and waiteresses make very little money, as far as an hourly wage is concerned. The bulk of their income comes from tips. I am not a wealthy person, but I always tip 20%. Even if the service is not that great. If the service is really good, I tip even more, if I have the money. But, 20% pf the total bill, is the least we as people, that can afford to go out to a nice restaurant, and drink a bottle of wine should tip. We might be helping a single mother or a college student pay for groceries! This is the least we can do for them. They are working, and not asking for a hand out. Open your heart and wallet.