Why are ignorant bigots under the impression that ALL gay men/women are hard-wired to behave the same way?

I live in Machusetts and gay marriage is legal here and nobody cares, like you know in some places they're so hateful to gay people, but seriously, its nobodys business how they live their life and we shouldn't restrict them from being happy by not allowing them to marry. I 100% agree that we're all different and people shouldnt go around judging others.