Is this something a majority of people support and the SCOTUS is going to have a ruling on soon? I don’t think so. I don’t understand the need to go down every possible thing people could do nor will I try to predict the future. Could people marry themselves one day? No idea. It was unheard of to have people of different races marry at one point. Then it became supported and allowed. This happened with gay marriage. I won’t predict the future of marriage as I have no idea.
I remain unsure why it bothers you so much. You still haven’t told me what effect it has on your life. Why is it so much more important than anything else you don’t like? You can probably come up with about a million things state, local, and federal governments do that have an impact on your life much more than this. Yet you’re really hung up on this single thing.