A tip is just a social courtesy. It’s a polite thing to do, but when you get stiffed or tipped less than 10-15% is it solely the customers fault. Maybe the sever was working below quality. Maybe the food was not good. Maybe just maybe the entire experience was awful. Am I obligated to tip then. Maybe gratuities should be mandatory for all restaurants, bars, etc. Or servers can stop feeling entitled and be thankful for the job they have.