RSSMonogamous marriage is an institution that has outlived its utility. For most of recorded history, at least in the West, low-status men did not have the means to marry, and Christian morality kept most of them from reproducing outside of marriage. In that social context, monogamous marriage was useful to promote civilization. High-status men reproduced. Low-status men did not.
However, in the context of the amoral, modern welfare state, monogamous marriage has become dysgenic. One need only tour local trailer parks or low-income housing projects to confirm this fact. The introduction to Idiocracy was funny because it revealed a truth we all know.
I have come around to endorsing polygamy as the only remaining means to address this issue. Society would be far better off if many of the low-status men who inhabit these abodes did not have access to women for the purpose of reproduction. Allowing high-status men to have multiple wives and multiple families is the only solution I see to the dysgenic sufferings of our current social order.