[quote name='mtxbass1']If you can't afford to tip, then you shouldn't be eating out.[/QUOTE]
Some people don't believe in the custom of tipping. Here is why:
In some states, wait staff MUST be paid at least minimum wage, so they're making as much if not more than the guy at the gas station. Why tip them but not the guy at the gas station? Wait staff is just doing their job. Tips should be if they do it exceptionally well or go out of their way to do something for you, and not just because of custom.
Even in states where employers can pay under minimum wage and tips can supplement that amount to reach minimum wage, the employer is usually supposed to supplement the paycheck when tips don't bring the server up to minimum wage.
Furthermore, how tips are pooled and who is tipped out to by the wait staff varies by every restaurant. The BOH rarely gets tips and they're the ones cooking your food. Sometimes bus boys work harder than the wait staff and you don't know if they're getting a portion of the tip or not. So those are other possible reasons why not to just tip like a robot, or if you do tip, directly tip the person who did the exceptional service.
I think the one group of people who might get screwed on tips are pizza delivery people because even if there's a delivery charge, the establishment is probably pocketing most of that and the delivery guy is sometimes dipping into his paycheck to service his car without those tips. But in a perfect world, their base pay would be enough to meet minimum wage and cover the car expenses, or at least make the car expenses something to write off on their taxes (assuming their taxes owed are high enough for that to make a difference).
I have to say, after giving it a lot of though, I agree with the idea that customary tipping should be done away with, when I previously believed everyone should tip at a full service place. Despite that, I still abide by the custom of tipping at full service places, and usually a little something at buffets if I'm randomly at one where you pay first then serve yourself and can't leave it with the rest of the check at the end. Usually 18 to 20% at a full service place, 15% if the service wasn't great. Can't remember not tipping but if it was bad enough I wouldn't. Places where I pick up food or counter service varies. Sometimes I throw in a buck, sometimes nothing. I guess by my standards I should tip at the counter too, but

it, I'm not perfect. I do appreciate great service and tip more in those instances, and would still likely tip if I got great service in a situation where tipping wasn't customary.
[quote name='lokizz']its becoming illegal in some places to leave without tipping.[/QUOTE]
Source? Where is it actually against the law by a validly passed and enacted law or ordinance that you must tip?
Some restaurants have mandatory "gratuity" for parties greater than a certain size, but that's just a company policy that's posted in advance, not a law.