Tipping is a non-sense...
You go a restaurant in Europe ask for a steak and a bier and you pay what it says on the Menu: 20 euros stake + 4 for the bier, u end up rounding to 25, so u tip 1 euro
You go to the US, the menu says Stake 20$ and Bier 4$, then comes the check and instead of 24$, u see tax of 3$ + 5$ of service/tip..its just retarded...
You go a restaurant in Europe ask for a steak and a bier and you pay what it says on the Menu: 20 euros stake + 4 for the bier, u end up rounding to 25, so u tip 1 euro
You go to the US, the menu says Stake 20$ and Bier 4$, then comes the check and instead of 24$, u see tax of 3$ + 5$ of service/tip..its just retarded...

...furthermore, a restaurant should reserve the right to refuse service to known bad tippers but then again we all know what kind of issues that would create...Conversely, look at a high class athlete like Peyton Manning doing the right thing!...even after the gratuity was added on!....
...he gave an additional 30% on top of the 18%!...total tip = 48%!...now that's a little excessive and too generous but it sure as hell is better than being a total cheap ass!