The argument most often heard in favor same-sex "marriage" is that it is the "fair" thing to do.
This is an interesting position, because having jettisoned one standard for marriage, those pushing for the inclusion of same-sex "marriage" now appeal to the public on the basis of another standard. But if there are to be no standards, or only "standards" that shift with the changing winds of culture (which then don't count as standards at all), on what basis are advocates of same-sex "marriage" appealing to the majority of us who, according to opinion polls, want to keep marriage for heterosexuals only?
Let's put it this way. If you tell me you do not believe in God and then say to me that I should brake for animals, or pay women equally, or help the poor, on what basis are you making such an appeal? If no standard for objective truth, law, wisdom, justice, charity, kindness, compassion and fidelity exists in the universe, then what you are asking me to accept is an idea that has taken hold in your head but that has all of the moral compulsion of a bowl of cereal. You are a sentimentalist, trying to persuade me to a point of view based on your feelings about the subject and not rooted in the fear of God or some other unchanging earthly standard.
The mayor of New Paltz, N.Y., Jason West, recently performed same-sex "marriages," saying it is the "moral" thing to do. Moral? According to whom? If only according to Mayor West, he is practicing moral relativism, not objective morality.
Thomas Jefferson did not speak of rights being endowed by the courts or vigilante mayors and judges who take the law into their own hands like a lynch mob in frontier America. He knew that for certain rights to have meaning, they must come from outside the reach of man. He also knew that in order to protect institutions essential to the preservation of the constitutional republic, it was necessary to create a system that would control human urges and appetites.
The idea of marriage did not originate in San Francisco or Massachusetts or even with the Founders. Like it or not, it came from the book of Genesis, where, after the fall of man, God said, "A man will leave his father and mother and be united to his wife, and they will become one flesh" (Genesis 2:24). Homosexuals may become "one flesh" in their own eyes but not in a biblical sense, no matter how many Scriptural heretics with degrees from seminaries that are mostly schools of unbelief are trotted out.