Its called freedom of association. It's called the right to refuse service to anyone. Even me. I have been at places that have done that and I didn't whine and get all butt hurt about it.
Personally, I think this whole gay marriage thing was pushed by lawyers. Sad but in a marriage someone's gonna get intercoursed when its over and it ain't gonna be the good kind. Barristers suck the life from you out of your wallet.
So then. Marry your sister, your mother, your father, your brother, your pet (any pet). Marry an inanimate object like a Real Doll.
Most of the more sophomoric GetBiggers would probably just love to marry their right hand (for the tax breaks) and then for excitement (Herne and Hippo are you reading this you fat, filthy pigs?) cheat on their spouse with their left hand.
So then. Don't associate with those you disagree with. If someone alters their appearance to look like the devil or a snake, how dare you call them ugly. What a pussified world this is fast becoming. A bunch of butt hurt manlets.
SNAGs. Sensitive New Age Guys.