Having a traditional view of marriage does not make anyone a bigot.

You are a bigot if you don't accept that there can be alternative views that should be respected.

Many gay people oppose gay marriage.

So what? Gay people are just as capable of getting it wrong. I'd also add that plenty of heterosexual people oppose "traditional" marriage. My view is that everyone is entitled to get married, or not, in any ceremonial manner they choose, and, provided no-one is being exploited or coerced into it, it is no-one's business but theirs and no-one is entitled to do or say anything to diminish their happiness. Call me old-fashioned.