To be honest this is how it should be. I am customer of the restaurant and waiter is employee of same restaurant. I am not paying tip to clerk in bank, nor to t

To be honest this is how it should be. I am customer of the restaurant and waiter is employee of same restaurant. I am not paying tip to clerk in bank, nor to the hairdressers, etc. In Japan tip is not only discouraged but waiters wouldn't even accept one. Why they can do it and we don't?