For me, it's consistency. I have had good experiences at BK, but I've also had TERRIBLE experiences at BK. McDonald's is basically the same every time. A slightly lower ceiling? Sure, but it makes up for it with its consistency. I was once incredibly hungover in a European country where I didn't speak the language and was stuck waiting at a train station. Ronnie was there for me and I'll be damned if it didn't taste almost identical to the McDonald's I went to in high school.Why do folks prefer McD's to BK? The quality of the actual burgers at BK is significantly better. McD's does have better fries - I will give them that.