I've worked at a couple of different restaurants, and a majority of the time.. The waitstaff were so 2-faced that I feel that it may have affected my overall generalization of waiters and waitresses..
I don't bode well with people who smile one minute, but then throw a fit the moment they reach the safe boundaries of closed kitchen doors over the slightest thing... Though I understand full well if they're flipping out because the customer was generally rude or unpleasant in his/her request of food.
Yeah you can tell I'm a real crowd pleaser when I eat at these restaurants... I know full well of who the whiners are and who aren't...
And yes I understand that it shouldn't matter as long as I get the food and it's made the way I want it, and that their overall opinion shouldn't make a difference whether or not they deserve a tip or not, and that it's their job to be all smiles when out in the dining room area or they'd be replaced, but I feel they should lighten up a bit.. So what if the guy wanted a side of mayo!? (Yes I've actually heard a waitress flip out over mayo... Bad day much?)
Waiting is not that hard of a job.. My girlfriend is probably the most ditzee person I've ever known, or will know, and she's one of the best waitresses at her place of workstuffs... Some of you may disagree with me on that, but I just have to say... Hey she can do it? (Before anyone thinks I'm rude about saying such things about my gf, I say it jokingly... We actually bust on eachother all time like this... She dishes it out as much as I do, so

)
And hey.. As a person who's worked in the restaurant business myself, I atleast take some consideration in by making sure I stack everything up and get everything squared away so the Waitstaff can come, pick up the plates, and carry on with their job..
I may sound condescending by saying this, but I've had enough experience with the waitstaff that I can pick out who really deserves a little extra cash and who doesn't.. It's all a matter of reading people. I just feel that if you're going to go back and say something about me, you don't deserve my money, and I'm not even that hard of a person to wait on! o.0
That and I haven't forgotten the basics of it all, quality of service, and all that jazz.. That does play a bigger role. So I don't feel that I'm being too prude about it, since the waitstaff does atleast get
Something out of it...