> I’m sick of some outliers discounting something that works as a whole

Whatever. I’m sick of the disinterested majority pretending real problems don’t exist and actively working against systems that would help more people, more fairly, because they’re not willing to use their imagination and compassion.

Your use of hunter-gather societies is a distraction. We don’t need to lean on poorly understood histories when we have contemporary examples to work with.

Also, “nuclear/extended” is two distinct categories, not one. And “polygamous” is a subset of polyamorous and carries some unhealthy ultra-patriarchal connotations and assumptions (I mean, I’m making some assumptions about what you mean).

Even if that's true (a big if), all we can infer is that that's what hunter / gatherer societies seem to naturally coalesce around. It's not what modern society is coalescing around. Some folks take that as a sign that modern society is fundamentally flawed, but I'd rather be born as a random person in modern society than a random person in a pre-historical hunter gatherer society. Perhaps that's just my bias towards modernity though.