Laws against sin

I passed by this article on same-sex marriage. In the article they quoted one woman as stating "same sex marriage is a sin."

Here is my question, since the woman was obviously against permitting it. Should our law attempt to legislate morality? Should there be a law against sinful behavior? Specifically, this kind of behavior.

There are laws against committing murder, for example. Few, even the godless, would argue that murder should be permitted. I'd think the answer to this should be obvious: murder affects others in a profound way. It disrupts their lives, etc., and I agree murder shouldn't be permitted. We've had laws banning strong drink, but they were controversial at best. Adultery isn't illegal, and most states with sodomy laws have repealed them mostly because us straight folk wanted to engage in that behavior without fear of being arrested.

I've been trying to go down the list of "sins" in the Ten Commandments, but can't find too many that are against the law. Except murder. And perjury, which I believe is the false witness injunction.

Even if you believe same-sex marriage is a sin, is that reason enough to make it illegal? There are lots of "sins" out there, but our system of laws tends not to recognize them. Reason being, one man's sin is another man's hobby. I'm not saying same-sex marriage is a hobby, and I'll agree some would find it sinful, but is it a good candidate for legislating?

I've already put my two cents in on this subject. My posts said nothing at all about how I feel about the behavior of gays, but just for the record: I say live and let live. To each their own. I play Dungeons and Dragons, too. Some would find that sinful, but thankfully it's still not against the law.

Lastly, I saw this quote: "We've made bad selections as presidents but survived as a nation. But if we move down the path towards the dissolution of marriage we cannot divorce ourselves from the consequences of that." Correct me if I'm wrong, but allowing same-sex couples to marry doesn't dissolve marriage, it extends it. Of course, they aren't saying exactly what the consequences would be, and in what way they would be irrevocable. I suppose that's just as well.