I am going to stick my neck out there and post a reply, with the caveats that (a) I am new to twoplustwo and (b) I only read about 50% of the thread.
People may tip (or may not tip) for many reasons, but one very likely reason TO tip for many people is because it is customary. Society is made up of many customs and guidelines, etiquette, whathaveyou that dictates interactions between people. It's not at all a bad thing to do things simply because it's customary nor is it bad to question those norms. Different strokes for different folks, as they say
and differing opinions, to me, makes life more interesting.
I play either 2/2 or 2/5 NL. I normally tip at least $1 per hand, even if there is no flop. I guess I've probably tipped up to $25 in a single hand. A dealer's conduct/performance would have to be really awful for me to consider not tipping or reducing their tip. I suppose I probably tip on the higher end in eating establishments, for cab fares, spa services, etc, as well.
Yes, I do these things because it's customary but because I truly appreciate the service I'm being given. I agree that in a perfect world their employer would be 100% responsible for paying them a reasonable rate. But that's not the case at this time.
I will also say that I often increase the tips I give by $1 or so based on the thinking that that $1 would mean a great deal more to them than it does to me. Imagine if everyone did that! And it's not that I'm independently weathly (not even close!). But I believe in doing my part in helping people. I also believe in good karma
Here's what I don't understand: I do not understand all the vitirol for and by people on either side of the issue. But I really, REALLY do not understand the posts by people who say tipping MORE than a certain amount is stupid or ridiculous or [insert insult here]. As long as the person doing it isn't insulting people who don't or calling attention to other people's tipping habits or being rude about it, why does it matter?
~Jen