"Think for yourself, and let others enjoy the privilege to do so too."
It would suck if someone you knew decided to think you were an absolute moron. You go to tie your shoe, they chuckle softly and do it for you. They talk down to you, explain everything slowly, and see you as nothing but a child. Would you ever want to be aroind them any more? You no doubt think of youself as an intelligent person, but you're seen as some helpless fool.