Any two people with opposing and functioning gonads can "make" a child.
It takes something special (aka: parents) to raise a child into a decent human being.
As an adopted child, I have my own personal experience to go on.
But, bad parents making and raising babies has been a part of humanity since we started walking upright. I doubt that it's going to change anytime soon. No matter how involved the "rest of the village" wants to get.
In my immediate family of 5 (my parents and my 2 sisters) 3 of us were adopted (my mom, and 1 sister).
To us, adoption is more "normal" than biological. Which has lead to a lot of interesting and unique events and observations on my part.