For as much as I agree with those who've mentioned the relatively indistinguishable characteristics of said BenAppleChilFridaginabees, it comes as no surprise to me that people frequent them whether they are at home or on the road. I always assume it is the "known quantity" element that comes into play. The fact that some people associate restaurants with the dish they always order goes along with why Applebees would be deemed by many as a decent choice for a meal.

My wife really likes their Oriental Chicken Salad. So, on occasion, she will want to go when we're traveling, but only for that dish. I would be willing to wager that when asked if she likes Applebees, she would say yes. I don't care for Applebees in general, but who am I to judge her for liking one thing at one place.