I drive a cab and am fine with a ten percent tip. As long as its least a dollar! Handing someone fifty cents is ridiculous - and has not happened to me.
Every day one or two people dont tip. They dont anger me. I figure they are poor or dont know. Usually.
Most tip fifteen to twenty percent. I am grateful. Cab drivers at least here dont make much.
Some tip up to a hundred percent. God bless them. It is very kind.
But as long as people pay the metered fare and are polite I dont get angry. I understand I am one of the rare ones. Just yesterday a passenger was telling me about a driver who got angry at him for only tipping $5.
I have never and will never berate a passenger.
Good man. I have tipped a driver generously for safely getting me where I needed to go in a pinch. Standard operations merit a standard tip but I do tip drivers.
A young man in Thailand got a tip much much more than the fare for getting me to the airport during the start of Thai New Year. I would never see him again but wanted to say thank you in a way he would remember. It was just the right thing to do.