In the wake of HBO’s “Big Love”, Jonathan Rauch on polygamy in Reason Online.
So far, libertarians and lifestyle liberals approach polygamy as an individual-choice issue, while cultural conservatives use it as a bloody shirt to wave in the gay-marriage debate. The broad public opposes polygamy but is unsure why. What hardly anyone is doing is thinking about polygamy as social policy.
If the coming debate changes that, it will have done everyone a favor. For reasons that have everything to do with its own social dynamics and nothing to do with gay marriage, polygamy is a profoundly hazardous policy.
To understand why, begin with two crucial words. The first is “marriage.” Group love (sometimes called polyamory) is already legal, and some people freely practice it. Polygamy asserts not a right to love several others but a right to marry them all. Because a marriage license is a state grant, polygamy is a matter of public policy, not just of personal preference.
The second crucial word is “polygyny.” Unlike gay marriage, polygamy has been a common form of marriage since at least biblical times, and probably long before. In his 1994 book The Moral Animal: The New Science of Evolutionary Psychology, Robert Wright notes that a “huge majority” of the human societies for which anthropologists have data have been polygamous. Virtually all of those have been polygynous: that is, one husband, multiple wives. Polyandry (one wife, many husbands) is vanishingly rare.