I was going to say that the main time I go to chain restaurants is when I'm worn out enough that I don't want to deal with surprises (I know what I can get at a Subway's, for example, and won't have to think too much about what to eat). Then I thought a bit more, and realized that no, the main reason I go to chain restaurants is when I'm looking for a reliable cup of tea. I might get a decent cup of tea at a random diner, but I can count on getting an acceptable one at Starbuck's (yes, for 2-3 times the price, but if I throw something away as undrinkable, it's no bargain).
Do other people feel as though more local chains--when there are ten or twenty of the restaurant, but all in a small part of the country--are a bit different from national or international ones?