This is the type of attitude that makes me NOT want to tip, and disagree with the whole practice of tipping in the first place. Good customer service should be given not because how much money you expect as a tip, but because IT'S YOUR JOB!
And if you don't like the wages, then find employment elsewhere. The agument that resturants are allowed to pay below minimum wage and you live off tips is stupid. Go work at Jack In The Box, or Wal-Mart that does pay minimum wage.
Stop making me feel guilty for your work situation.