Bacon cheeseburgers are great because beef is great, cheese is great, and bacon is great, and these things are all great together. But most fast-food hamburgers taste vaguely savory, seem to be made of ingredients that are only food-like, and have the texture of sludge once they're in your mouth. The burger at Five Guys tastes like an actual bacon cheeseburger made with beef and bacon, and that's why it's good. This isn't complicated.