Most dispiriting, and least convincing, are those arguments that simply reconstitute the slippery slope arguments that have been used for so long against same sex marriage. “If we allow group marriage,” the thinking seems to go, “why wouldn’t marriage with animals or children come next?” The difference is, of course, consent. In recent years, a progressive and enlightened movement has worked to insist that consent is the measure of all things in sexual and romantic practice: as long as all involved in any particular sexual or romantic relationship are consenting adults, everything is permissible; if any individual does not give free and informed consent, no sexual or romantic engagement can be condoned.
This bedrock principle of mutually-informed consent explains exactly why we must permit polygamy and must oppose bestiality and child marriage. Animals are incapable of voicing consent; children are incapable of understanding what it means to consent. In contrast, consenting adults who all knowingly and willfully decide to enter into a joint marriage contract, free of coercion, should be permitted to do so, according to basic principles of personal liberty. The preeminence of the principle of consent is a just and pragmatic way to approach adult relationships in a world of multivariate and complex human desires.
Progressives have always flattered themselves that time is on their side, that their preferences are in keeping with the arc of history. In the fight for marriage equality, this claim has made again and again. Many have challenged our politicians and our people to ask themselves whether they can imagine a future in which opposition to marriage equality is seen as a principled stance. I think it’s time to turn the question back on them: given what you know about the advancement of human rights, are you sure your opposition to group marriage won’t sound as anachronistic as opposition to gay marriage sounds to you now? And since we have insisted that there is no legitimate way to oppose gay marriage and respect gay love, how can you oppose group marriage and respect group love?
I suspect that many progressives would recognize, would pushed in this way, that the case against polygamy is incredibly flimsy, almost entirely lacking in rational basis and animated by purely irrational fears and prejudice. What we’re left with is an unsatisfying patchwork of unconvincing arguments and bad ideas, ones embraced for short-term convenience at long-term cost. We must insist that rights cannot be dismissed out of short-term interests of logistics and political pragmatism. The course then, is clear: to look beyond political convenience and conservative intransigence, and begin to make the case for extending legal marriage rights to more loving and committed adults. It’s time.
http://www.politico.com/magazine/story/2015/06/gay-marriage-decision-polygamy-119469.html?cmpid=sf#ixzz3eBgtvUuQ
They don't just want to destroy marriage, they want to destroy Christianity.