I guess that I'm asking for a clearer definition of "nature".
IMHO, if its planned, manufactured, or learned, I don't consider it "natural".
Perhaps I am a bit literal because I have worked with too many predators who hide behind excuses of human "nature"?
The human mind is far too unconsciously programmed and socialized (often over generations) for me personally or professionally to consider it "natural" but rather learned. Much of what I see people calling "natural" is only "normal" for them due to habituation.