McDonalds can take some of the blame because of a combination of advertising and stuffty food. McDonalds spends an ass load on advertising compared to most other fast food chains. They also market largely to kids. Most kids will naturally go just to get the free toy that they will play with for 10 minutes and never look at again. So, when parents ask their kid where they want to go to eat, the answer will almost always be McDonalds. So, everyone ends up eating McDonalds because that's what the kids want. But that wouldn't be a problem if their food wasn't some of the worst stuff on the planet. Anyone who has seen Supersize Me knows what I'm talking about. That's also where the Harm94 got his fry fact from. Also, as Adio pointed out earlier, it is fast and cheap.