Originally Posted by MrG
There are places where the latter doesn't deliver, and sometimes the convenience is worth the difference in quality. We have a place here that has some amazing NY style pizza. Unfortunately, they don't deliver, and, because it's downtown, it can be a hassle to deal with getting a slice/pie there. As such, I'm often willing to eat pizza that isn't as good as theirs if it means I can sit at home and have it come to me.
Yep, I believe this is the appeal of a majority of these chains -- they will drop off pizza that might not be great tasting, but it's relatively cheap, and you don't have to leave your house while drunk off a few beers while it's cold/raining/snowing outside in the middle of a good game.