Or, is it because I'm trying to make up for my father, who was the cheapest man alive and thought $1 was good tip no matter what the bill was? He wasn't mean and certainly wouldn't want to insult the server, he was just cheap - plain and simple.
Isn't this the truth, my grandfather was the culpret in this case. He never worked a single day in the service industry nor relied on tips. Whenever he would take someone or all of us out to dinner someone always had to go to the bathroom, forgot something, or just went back in to leave the appropriate tip.