My wife and I had an absolutely terrible vacation with her family. It was so bad that I'm going to tell her family that we are not going to visit them again for several years.
I think that might just make things worse. Have you talked about this situation with your wife?
She won't wanna talk about this since her family already doesn't like me.
You shouldn't base your future on one bad vacation. How do you think your wife would feel not seeing her family?
Well it would be great for me because I wouldn't have to see them for a couple years!
Although it might make you happy not to see your in laws, your wife would almost certainly be sad. They are your wife's family and she loves them. You need to try to get along with them and be more patient with them.