Yes to each his own. I work hard for my money too and do not consider it throwing money away. I respect your point of view and it is ok with me if they do not respect me for tipping in the manner which I choose. I cannot imagine that disrespect would result in any negative vibe for me. It never has. I love to see the driver happy and when they attend to my 83 year old mom with such respect and willingness to assist Her as though it was their own mom, then yes I love to share what I think is fair. It is not my job to shape the direction of the going price. I just am happy to make those happy who work hard to make us happy without regard to other variables. Respect!