monogamy is hereditary
True, since that is what we except seeing it prevailing all around us.
But from an evolutionary stand point, polygamy is natural. You know, to spread the genes far and wide.
What people are doing now is to mess around. It only makes things hard for themselves. I'm pretty sure they aren't doing it to save the species! We kinda need culling, not saving. :P
Anyway, polygamy is on the rise for all the wrong reasons (were there ever any right reason? I don't know. I guess I'm pretty much like a conservative here.) So, hailing monogamy ain't all too bad, don't you think? :D