I agree. Our argument on this subject has been about defining terms. To say just surviving in the wild is sane is an example. That is apples and oranges when we are discussing your hypothesis that all of us humans are crazy. With such mixed metaphors we will never agree.
I think we can and do agree.
Against a baseline of survival (that survival the opposite of which in animals means death), sanity has its definition.
As humans move AWAY from that baseline, they enter a territory in which they have the luxury of living lives which are no longer on the razor's edge...and insanity as a livestyle becomes possible.
Because of a man who loves them--or parents who support and defend them from the baseline of nature--humanoids are able to move away from existential "reality"...
Let's start there.