If you keep going with the theme of 'the changes we come up with are more human than what is innate', where does it end?
Where does it end? Who knows? At this point, Isaac Asimov's The Last Question comes to my mind.
Being human is not about being nice and living in harmony. It's about struggle and unfairness, compassion, competition, fights, power, tranquility, hate, love and war. I don't think there is anything rational or reasonable about it.
Ultimately, any sort of action increases entropy. So might as well enjoy it while it lasts instead of thinking of the greater good and how to force humans into this hegemony of cooperation and sustainability.
This is not to say that some of the more base instincts/behaviors shouldn't be squashed, but I think we should stop short of suppressing most of them.
What makes us human? We know from experience that children are often cruel towards other animals, even other children,and get drunk on power too easily. So this kind of aggression is something innate, right?
But we have learned from experience that it's not good for us as a society, so we train them( at least in most cultures) to be kind and compassionate.
Now what is more human then- brutality or compassion? Of course compassion. It doesn't matter that this trait is not innate. What matters is that we have consciously chosen to cultivate and promote this trait. Call it "conscious" evolution, if you will. But it doesn't make us any less of a human. It makes us more human- the human that has collectively evolved using transfer of experience through language.