You and I have a different definition of marriage, my friend. A marriage is not made by "honoring vows," but by the grace of God. People an "honor vows" and be any which way they please. The state has no place in defining, taxing, regulating or otherwise claiming dominion over that which is God's alone. God has made marriage. The state is powerless to destroy it. What you and the state calls marriage, I call the fallen nature of man: the claim that men have the power of God.
Marriage means one man and one woman, according to Natural Law which is created by God, by biology (also created by God) and is part and parcel of Natural Law.
I am not interested, for the discussion of preventing sodomy/two men/two women/fake “marriage” to get into details of religious meanings of marriage. That narrows support.
Simple nature, biology, and every religion in the world says “man+woman=marriage”.
You want to narrow support, that’s your choice. I want to widen support. The government has no freaking right to change the eternal and natural meaning of marriage to cater to mentally ill sex perverts.