I went back out of necessity only, and fortunately it was ok. I originally stopped going as they didn't deserve my money through carelessness - I reward bad service by never going back. After it changed owners it improved it seems.
Of course you don't have to return to a place where you were not well cared for. That's obvious. Here in this city it is very difficult to find something of quality. Or I'm very demanding.
I think people's expectations get lower and lower our of necessity and because the overall standards are dropping across the board. It's one of the reasons I don't eat out as much.