I cant fathom why they would p proposition 8 in california?

It's so stupid. Who knows (yeah... i know hear me out though)? In another dimension marriage might only be allowed between same es. Why is it their right to determine who should be with whom. I don't understand the whole "anti-gay movement" at all. No one makes fun of them or shuns (for lack of a better word) them because of their uality.