Burgers, Fries, Crips, Chocolate, Cake, milkshake, etc., etc. The list is lengthy.
Junk food is addictive and full of things which can do us harm, yet the market for it is huge. I can't deny that I love junk food. It is the reason I'm spherical in shape, but it is just so darn hard to give up. If I'm truly honest, I don't want to give it up, because a lot of it tastes so nice.