So somebody that disagrees is a bigot? Hardly, at least in my view.

Thousands of years of cultural history and practice throughout the world have recognized marriage as a union between a man and a woman for procreation. That's what the vast majority of people throughout history in almost every nation have thought and recognized. I don't want to be the same as "them" and I suppose I ought to start whining that I and my male partner are being discriminated against because we poor dears can't have babies and can't even menstruate.
Woe is us.