Like a lot of chain restaurants, the quality varies pretty wildly by location. There was a (thankfully brief) time in my life where Taco Bell was very nearly the cheapest source of food available, and a large percentage of my food intake came from their value menu. Not good for the ol' cholesterol, but I was young and needed calories, and I found a location that was consistently decent, so I would go there, spend two dollars, and get enough food to last me the rest of the day, and it was inoffensive enough that I could eat it every day and not get sick of it. Bringing my own hot sauce helped.