I don't want to use half my yearly vacation time to go with my wife and her side of the family on vacation.
Why not? A vacation could be fun!
I would rather spend the time with my family and friends. Plus my wife's side is a pain in the ass.
I get that! But it could still be good to go. Do it for your wife!
She's a bitch. I don't care.
That's rather rude to say about your wife. She's just trying to get you to have fun and spend time with her family on vacation. You shouldn't get so worked up about minor things to the point of insulting your wife like that.