Do I really have to like my girlfriend when I am dating?
Do you have any specific reasons?
There are some reasons. One of them is that she doesn't like my parents.
You can't really expect your partner to like anyone, unfortunately. I'll say that if you actively dislike her, either try and talk through it or break up.
The feeling is mutual. I'm simply not happy. It's a waste of my time.
Well I am glad you see this issue before you get more serious. She should be able to respect your family even if she doesn't like them. I hope you can find someone who really likes your parents.