Which is exactly why abortion, gay marriage etc. are being pushed to legality (or are already legal)
The founding fathers were aware of the paradox.
They were well of the fact that the heavenly laws you obey can be extremely different from the heavenly laws your neighbor (a Muslim) obeys, as well as those of the guy down the block (a Hindu).
At the time religions weren’t so diverse in the US, but still, various Christian sects often bitterly fought and tried to suppress each other.
This was a great reason to create an inviolable Bill of Rights that everybody had to follow, but at the same time the law, *as long as it did not conflict with the Bill of Rights*, should generally conform to the desires of the majority.
They even included agnosticism and secularism into the mix, as well as busting up the creation of the law at several levels, both within the federal government, and between the federal and state governments.
The two examples you cite both “broke the rules” to evade the constitution. Roe v. Wade was purely legislating from the bench, putting the desire of the majority (at the time) above the rules.
And gay marriage is popular nowhere, being forced through by corrupt state legislature and judges.
But if you compare these aberrations to the vast amount of good law that has been created in over 200 years, it is clear that they had the right idea, which goes back to my point of ethics vs. morality.
Morality is created by heaven and interpreted by religious people, but it is not universal. You would find it loathsome to be ruled over by someone else’s morality (such as your examples, again, whose proponents insist are both morally demanded).
But ethics, the law promulgated by the people, that goes through the meat grinder of the legislative process, may result in a law you don’t particularly care for, but it will not terribly oppress you or deny you your rights.
And, unlike someone else’s morality, the written ethical law can be changed.