Here is an article advocating it. One argument that the author of the article does not address/attempt to refute, that to me might of the most concern as a public policy matter is that it will tend to lead to a surplus of eligible males to females, as the alpha males collect multiple wives (unless offset by more males going gay, which is unlikely, or even more unlikely, there are enough polygamous marriages involving one woman and multiple men). Societies with a big surplus of males that can't find a wife, can be destabilizing to society, and even make it more warlike.
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