Please understand that it is an industry norm for your server to have to tally up their sales at the end of the night and figure a percentage of estimated tips based on that. this number is used for IRS reporting--they are taxed on expected tips whether they make them or not. This was the worst part of bartending. Um...second worst. the worst was cleaning the barfy men's room. I had to really tear into my mom for this one, she said they could afford to go out but not tip. Sorry, I account for that when I plan a night out because I KNOW they have to pay income tax on it whether they get it or not.
I tip 15% for adequate. Usually more, if it's good. And sometimes, about twice a year, at least once around the holidays, the girls and I plan on a "Make Someone's day Outing" As in, we go eat a normally priced meal, and for a good server at one of our favorite Mom and Pops, then leave around $50--which is often more than the tab. They have a hard, nasty job. A little kindness to someone goes a long way in this world. I also want my girls to learn to be kind all the time, without expecting anything in return--simply for the virtue of kindness in itself.
I also tip my nail girl and my hurr girl generously, as well as those other services who are traditionally tipped.
Anyway, if I don't have it in the budget to tip 15% of my estimated ticket, I don't go. Period.