I will eat at a chain or franchise if it is one we don't have in our area. Basically, as long as it isn't a fast food place or Waffle House, it is a possibility. And there are some locations where it is very nice to get something familiar while travelling. For instance, when we were in France, we stayed at (what is known at) and American hotel where they served the standard American breakfast. The stand-out of that breakfast was plenty of good coffee. If you've ever been to France, you'd quickly realize that serving sizes, especially of beverages are very, very small. I need a lot more coffee than that. Having something familiar made a huge difference in the enjoyment of the trip.
If you all came here to visit, you'd be hard pressed to find a place to eat that isn't a chain restaurant.