As a frequent visitor to the USA I find the tipping system bizarre. Why not pay staff a living wage. I have given a 10% tip in a diner and if looks from the waitress could kill, i would be dead, They expect a $5 dollar tip on a meal that costs $10 dollars ffs. My American friends say "but you should pay for good service". So you have to bribe the waitress not to spill the soup in your lap ?