Because you would not belong, said the Hat, and there is nothing in you that would allow you to adapt, there is no part of you that could make it pleasant. When students argue I will send them where they ask, if they have anything, anything that makes it a sensible choice, but you would be miserable in Ravenclaw. You do not like to argue, you do not like to ask questions for the sake of questions, you do not like to be alone with a book. You are a social creature, you are meant to have friends and to do things with your hands, you are a -