Reasons to hate someone

what is the reason we hate someone? there are some reasons probably match with you:

1. he has a bad attitude. sure it makes you 'illfeel' to be next to him.
2. he has a point of view that opposite with yours. it makes a very bad result if you argue with him.
3. he force you to give you what he want. it has been clear, you can't accept that. it is important to be ourselves and reject anyone who push you to do something that you don't want to.