All this evolutionary biology stuff sounds nice and intuitive But my understanding is the actual research and literature on this is controversial and inconclusive. Evolution is actually way more complex (and fascinating!) than that. And to say that "society" imposes an artificial goal of monogamy is way over simplifying. We all have conflicting imperatives.
We are not frogs, and our little tadpoles cannot just be released into the ocean and expected to survive on their own. We have an evolutionary instinct to stick around and raise the little buggers too. But wait, there's more. At some level, a woman also has incentive to cheat and to procreate with different men to diversify her portfolio. And she then has an incentive to lie to her partner about it to get him to raise the bastards. And then the men have incentive to kill any other man who wants to impregnate his targets. So if we're going to justify ourselves with this theory, we should be ok raising the fruits of our wife'd cuckolding, and/or we're also justified in killing our fellow mongers instead of recommending to each other who gives the best blow job. Because what's the point of sex with someone who screws 1,000 guys a year? Those are some low odds. Very inefficient allocation of resources! Speaking of which, wheres the evolutionary sense in CIM? What kind of idiocy is that?
Also, polygamy is a social construct as much as monogamy. In societies with polygamy, it's always one-way. There have been matriarchical societies where women have multiple husbands, and of course patriarchal societies, but never both at the same time. So it's a power thing as much as a sexual/procreation thing. And keep in mind, in societies with polygamy, basic math will tell you that if a few men are getting multiple wives, then most men are getting nothing, nada, zilch. You wanna live in that world? (If we were really designed to be polygamous, there would be 2 or 3 girls for every boy). What's relatively new is the notion of marriages based on romantic love.
That said, I'm pretty sure in a polygamous society HH is still going to rise to the heap and be one of the aristocrats with 12 wives and 72 concubines. So 83 guys will be trying to kill him. Good luck, buddy!
Btw, similar things could be said about sugary, fatty foods. There's an impulse to eat as much meat as you can because you never know when you'll be able to eat again. But now we can eat burgers and fries every day. Sure, you can say you've been programmed to eat as many burgers as possible. So I would suggest that all of us here are all sexually obese, and I'm not sure what the metaphor means here, but were probably in danger of having a metaphotrical coronary.