I rather like John Corvino’s response to the nonsensical “if you support same-sex marriage, then there’s no longer a reason to oppose polygamy” argument:
The trouble with the slippery-slope argument from gay marriage to polygamy is that it’s a nice sound-bite argument that doesn’t lend itself to a nice sound-bite response. “Show us why polygamy is wrong,” our opponents insist, as if that’s easy to do in 20 words or less. (Try it sometime.)
But here’s a little secret: they can’t do it either, because their favorite arguments against same-sex marriage are useless against polygamy. “It changes the very definition of marriage!” (No: marriage historically has been polygamous more often than monogamous.) “The Bible condemns it!” (Really? Ever heard of King Solomon?) “It’s not open to procreation!” (Watch “Big Love” and get back to me.)
If there’s a good argument against polygamy, it’s likely to be a fairly complex public-policy argument having to do with marriage patterns, sexism, economics, and the like. Such arguments are as available to gay-marriage advocates as to gay-marriage opponents. So when gay-rights opponents ask me to explain why polygamy is wrong, I say to them, “You first.”
Comments on “Alas” are heavily moderated. If you’d like to avoid that, please leave comments on the same post at Creative Destruction.