I find the 10 commandments useful, but it's a personal thing.... As it should be.
But as institutional & governmental doctrine it should not be even part of the discussion, imho.
And fwiw... Adultery was once illegal in this country. I happen to believe that it should be illegal, just like emotional abuse, and neglect. But we have a long way to go as a culture to come to terms with the ramifications of such things, let alone crafting the language that can describe the intent, damage, and punishments that would be there.