Why do I hate myself?

Its just a state of mind you are in. Try thinking more optimistically, because it sounds like you are an amazing person. You may also have some sort of depression, i have this problem as well. I dislike myself strongly, but in a way a kind of like myself as well. Just try to think about all the good things you have done in life, and the good things about your appearance and your personality. Maybe that will change your views. Also, if that doesnt work i would suggest a pill, like lithium for example. To balance out the chemicals in your brain and make you feel better about yourself.