Why do white people think they are all attractive and blacks are all ugly?

It is because of the mutations in their genes. Because of the fact that they are white, they have deviated from their natural skin color. This means that their brains are also more evolved, and are capable of intelligent thought. Since they have had more evolution, their bodies have had more time to perfect looks. Blacks on the other hand, have had less time to evolve, and therefore, less time to have gotten towards better looks. Also, fried chicken gives you bad acne.