Adultery already has some pretty severe civil penalties when you think about it.
It's not that it's a bad idea. If you could stop adultery and fornication, it would mean and end to sexual diseases, out of wedlock pregnancies, and most abortions.
But I'm afraid just like Moses with divorce, that man's heart is too hard. I think the best we can do here is litigate around it, provide for divorce, provide for adoptions, and protect children and teenagers.
"SCALIA'S MORALITY OF PREJUDICE: Antonin Scalia's dissent in Lawrence vs Texas is, as usual, interesting and not quite as chock-full of animus toward homosexual dignity as in the past. It comes down to two arguments: that an assertion of "morality" is justification enough for any law anywhere, regardless of its rationality; and that a law that covers only same-sex sodomy is not discriminatory toward homosexuals. Both ideas strike me as wrong. On the first count, surely the government does need to provide some kind of reasonable justification for a law expressing "morality," which doesn't just rely on what people have always believed or always assumed. One reason that this law was struck down is because its supporters couldn't come up with an argument that justified persecution of private sexual behavior, apart from the notion that stigmatizing gay sex was somehow good for families. Allowing sodomy for 97 percent of the population, while barring it for 3 percent cannot possibly be defended as a law designed to prevent or deter the immorality of sodomy. It was a law entirely constructed to stigmatize gay people. It had no other conceivable purpose. And when "morality" is simply a rubric under which to persecute a minority, then we don't really have the imposition of morality at all. We have the imposition of a prejudice. At least the Catholic Church makes no distinction between heterosexual sodomy and homosexual sodomy. In fact, I know of no religious or moral tradition which makes the distinction that Texas law made until today. Scalia is not upholding any morality. He's upholding prejudice. As to his notion that the law doesn't single out gays because two straight guys getting it on would be criminalized as well, that's like saying that a law banning Jewish religious services is not anti-Jewish since goyim could not conduct such services either. It's the kind of sophistry you need to deny the obvious, hostile intent of the Texas law." --- Source.