“It is insulting to leave any tip in Tokyo but offensive not to leave a large one in New York.”
I am not generous at tipping people though I tip most of the times. I feel guilty about not leaving a tip. My friend, who is particular about his food, will tip a generous amount if he enjoys the food. It is also true that usually the greater is the amount of the bill, the greater is the tip. In times, when eating out is so expensive, why does tipping still prevail? Why is it offensive to tip in Japan and offensive to not tip in the United States? Should one tip if service charge is already levied in the bill? There is more on tipping in this exhaustive write-up.