Odd that you would complain about this, since you DID receive replies to other portions of that post, which you didn't yourself deem worth responding to (except one making a joke about body hair). Those in glass houses...
"Odd that you would complain about this, since you DID receive replies to other portions of that post, which you didn't yourself deem worth responding to (except one making a joke about body hair)."
It was only a half joke. Things as simple as sexual preference can have a significant impact genetically over time and can, for example, trend a population towards less body hair.
For example, also in accord with "natural selection and survival of the fittest," male lions usually kill all the cubs in a pride when they take it over from another male. There are many other examples of ubiquitous infanticide in nature. Nor is infanticide uncommon in human cultures. None of this, however, morally justifies infanticide.
Human beings obviously evolved from animal predessors. Early humans developed language and social understandings than were in a struggle to understand responsibilities to the group. Individualistic perspectices like, "Nah,'I don't believe in the rain god' would not give you love and hugs in your clan.
Ethical concerns and common interest concerns developed. The notion of sin and "morality" from an invisible god of punishments derived from the old shamans. The idea of extending "humanness" to blacks, to Native Americans came later. The idea that female humans might be equal humans was a key understanding from Darwin.