I'm not sure what you are asking anymore. What I want and what I would be justified in imposing on others are not the same thing at all.
I will try to ask it a different way.
Do you think using the term marriage for their unions whether religious or not has at its root getting society at large accept those unions?
I feel the same way as you do on the last sentence. My personal opinion is that God allows people to do as they wish and suffer the consequences. While I want to live in a society that embraces what I believe and tries to live by the Bible, I do accept that has never been the normal case in the history of the world. However, I am lucky enough to live in a country that in the past was built (however imperfectly) on a lot of those principles, don't want to see it go away, and will vote and voice my opinion as long as I can.