You've been brainwashed by the LGBT movement, my friend.<quoted text>
Your argument has a familiar ring to it.
Oh yeah - it sounds a lot like this:
Interracial marriage is not comparable to same-sex marriage. A fertile man and woman are anatomically compatible and can procreate, regardless of their skin pigmentation. A fertile man and man or woman and woman are neither anatomically/sexually compatible nor capable of producing a baby together in a natural way. I know it’s hard to accept, but that’s the truth.