Uhm, what? If objective morality exists, there's no such thing as subjective morality. As for the things you say not having actual meaning, I agree. It's just what you "feel."
"Our Constitution was made only for a moral and religious people. It is wholly inadequate to the government of any other." - John Adams
But John Adams, a founding father of our country, one of the drafters of the Declaration of Independence, his opinion doesn't matter either, right? Right.
Not by the Supreme Court. And in any case, it's irrelevant. If the Supreme Court's ruling was overruled here, your opinion on this issue wouldn't change.
In Dred Scott v. Sanford, the Supreme Court ruled that the children of slaves born in the United States weren't citizens and could not be offered constitutional protections under the law.
I don't define my reality by what the Supreme Court says. Obviously you do, hence the difference.