I see you've had a bad experience or something with someone who is vegan.
Everything you said is just an opinion, none were truthful facts.
I'm not going to start preaching about veganism in here because A) it would be offtopic, B) I've done it before and don't need to do it every time some moron comes waltzing in with cockamamie ideas about veganism and C) my preaching would only make you more stubborn.
I will only suggest that you do some more reading on the subject, because you're very, very far from anything concrete and truthful.