I try very, very hard to never eat at chains for a couple of reasons - first, the "food" is generally terrible, as well as the "value" of what you get for what you pay is dismal, there's also most likely something local that's 200% better (though, admittedly, not always). I could, and often do, go on, but...
IF I'm somewhere completely unfamiliar, or if there is just nothing else available, I will eat at chains as necessary for survival. Enjoyment? not so much.
I sort of like Arby's - some of the homestyle sandwiches taste like food.
I've had some decent meals, and at very decent prices, at 99.
I fully love Krispy Kreme, and can't fathom the apparent NE preference for the "yumm-o!" DD!
At the moment, those are all of the chains that I can think of that don't actually make me shudder with disgust.
WHY (I realize that this is a whole other thread) can't we in the US have fast food that doesn't totally suck?