Why your parent and in-laws never agreed upn things together?

Tweet

Why they always fight against each other's opinion? They seemed to become more childish than us. LOL's, they never agreed upon things together??? Even though we wanted to share previous moments/events/ocassion with both parents, it's very impossible to create a good experience. It always become a ruin if they're both there for the ocassion. Can our in-laws become friends together? or if they'll friends is it true or just being sarcastic?