"We have this document that defines the shape of our nation. You might have heard of it. It is called the Constitution. It is considered one of the great documents in human freedom ever, along with the Magna Carta. It was radical in its time. In a world ruled by monarchs, where people were either born as a have or have not (and the chance to move up was almost nil), and where religion was commonly dictated by governments, here comes a document guaranteeing everyone has the right to speak his mind, seek his fortune and worship (or not) in whatever kind of church he chooses."
Or in other words, if you don't believe in gay sex, don't have sex with gays. If you don't believe in gay marriage, don't marry a gay person. If you don't believe in sex before marriage, don't have it. If you don't believe in birth control, don't use it. If you don't believe in evolution - well, I can't help you there.
But there's no constitutional requirement than any belief you hold dearly has to make sense. But there IS a lot in there intended to keep busybodies from imposing their fondly held ideals upon others by force supplied by the State.
I make no distinction between the self-righteous Liberal and the self righteous Conservative. I care not whether your "thing" is gay marriage or smoking, your cause PITA or AFF. To the extent that you are willing to coerce me in order to achieve a "moral good," to that extent you are willing to sodomize the constitution to get your way. And I will have none of it. A pox upon both your houses.