My best freind was hooked on Crank. (Crystal Meth) for over a year and a half. He became someone I didnt even know. Recently he was in a car accident and got a concussion. He went to the hospital and had a CAT scan done. The saw to streaks of scar tissue going from the front of his brain, all the way to the back. He has little cartilage left in his septum, because it was torn while doing a rail. So I would have to agree with you on the fact that Drugs are bad.