found online by Raymond
From Michael John Scott at MadMikesAmerica:
Why did humans become monogamous, apparently rejecting the promiscuity that is natural to most animals?
Was it morality? Religion? Maybe love?
The answer is germs, researchers said Tuesday…
I would have first guessed that it had something to do with the improved survivability of our slow-to-develop young under the protection and support of two committed parents.