As I said earlier, rights that are based on exclusion will lose out to rights based on inclusion. Your imposition based on the right to exclusivity is trumped when in direct opposition of imposition based on the right to inclusiveness.
The semantic argument is required, since it comes down to the definition of a word to those that wish to exclude, after all. Much in the same way the nuclear family isn't the "traditional" form of a family in human history, heterosexual monogamous marriage isn't really the "traditional" form of marriage.
When Bush wanted to ban gay marriage: https://www.aaanet.org/issues/policy-advocacy/Statement-on-Marriage-and-the-family.cfm
Even in the US history, the idea of marriage has changed. Think a 1950's marriage is the same as a 2010's marriage? https://users.rcn.com/bendesky/about/cbta/50swoman.html
Correct me if I'm wrong, but there are only four key arguments for the exclusive side: I don't like it, morally wrong, no kids/bad family structure, not traditional.
Traditional marriage is impossible to truly define, and certainly not universal in any way, since there is a bevy of research on what marriage has meant to humans across time, so that's not a valid argument. The foundation of marriage is not exclusive to sex and child rearing, since child bearing and rearing occur outside of marriage, and marriage occurs outside of sex and child bearing and rearing, making the child angel flimsy at best. Is the belief that banning two people from having the same legal (and not same but separate) status as two other people less of a moral? Do morals have a ranking scale? If not, than morals cancel each other out.
That leaves that you just don't like it. Not going to win much with that as your only strong argument.
Here's kind of an interesting read on reaction to the Supreme Court case.
https://www.psychologytoday.com/blog/what-makes-us-human/201303/ask-anthropologist-about-marriage
So I read the link. I was a regular reader of Psychology Today a while back.
I have been an opponent of every conservative law or effort to "protect the family" such as constitutional amendments or legally defining "marriage" as "one man and one woman". For many years. . .. when I was maybe 19 to 30, I was an advocate for gay marriage. I consider the issue hijacked and the hijackers to be statists who put government power as the objective of the debate.
A careful reading of my posts here will show someone who's willing to think about it, that what I am opposing is not equality under the law, but the loss of personal prerogatives.
We have lots of financial sorts of legal entities that people can choose to form to achieve specific objectives, and we have different names for all of them, and people can use those names in discussions to get a clear understanding of what is proposed, and what may be expected.
I consider the Prop 8 initiative and it advocates and counsel pretty stupid, but lovable human beings and my sympathies go out to them. . . . . simply because the change-agent pushers on the liberal side are even more statist and less attuned to tolerance.
I'm pretty sure that our statists will achieve their increment of state power, and I'm pretty sure almost everyone will be screwed.
We can have different social institutions, just like we have different financial institutions, keeping "marriage" as it is on it's changing trajectory as people do change in our changing times, and invent some other forms of quickly-understood contractual relations recognized and protected by appropriate law. We don't need to give the federal government the power to homogenize us---all right you gays, learn to laugh a little---according to some supposedly "progressive" vision of a new mankind.
It's a pretty good argument about the semantics and how the inclusive definition might win out, but it's not the relevant one. Look at the hate the GLBT advocates throw out. In Utah, there was a rally of gays in the state capitol building one day. No one came to harass them or disrupt their meeting. Another day the folks for "the family" did a rally. oh, about 500 rude and loud, taunting and disruptive and disrespectful opponents showed up with their banners. You really don't have the truth with that point about who has the "inclusive" definitions of human rights.
"Heretic, Rebel, a thing to flout, Hate drew a circle to keep me out. But wit and I had the wit to win, Love drew a circle that drew him in"
the question is, really about how to keep the government from telling us what to believe, what to say, who to associate with, and what to do. I say you don't do that by re-defining marriage or wiping away people's sense of personal choice. So if you want to draw more religious or otherwise skeptical folks in, do it in a way that shows respect for them and understanding if not sympathy for their ways and views. I'd like to convert some gays into my view about achieving personal rights through respecting others and finding mutually-satisfying solutions, rather than a divisive and demeaning endless argument.