It shouldn't be left up to anyone to decide whether or not I should be able marry the person I love besides me and the other person. There should be no voting on it, it should just be. You, or any other heterosexual NEVER AT ANY TIME had to fight to marry the person you loved.
Fine. Then take the state out of it--don't have any recognized marriages, and don't get any benefits on account of your marriage.
That's the easiest and simplest way to acede to what you want. If the state gets out of it, then NO ONE has any interest in the act.
But if that happened, the whole reason you're arguing for recognition would be defeated.
As long as marriage is a state-sanctioned event, there will be "people" telling you who you can and cannot marry--be it homosexuals, your sister/brother, a lunatic or mentally impaired person, or more than one person.
It's up to you--give up your spousal benefits coming from state recognition, or forever make this issue non-political (which means religious, if anything--and then you have people telling you who you can and cannot marry).
Please decide your position.