No, Polygamy Isn’t the Next Gay Marriage
.. gay marriage and polygamy are opposites, not equivalents. By allowing high-status men to hoard wives at the expense of lower-status men, polygamy withdraws the opportunity to marry from people who now have it; same-sex marriage, by contrast, extends the opportunity to marry to people who now lack it.
.. The study found that monogamous marriage “results in significant improvements in child welfare, including lower rates of child neglect, abuse, accidental death, homicide and intra-household conflict.” And: “by shifting male efforts from seeking wives to paternal investment, institutionalized monogamy increases long-term planning, economic productivity, savings and child investment.”