With animals, studies have shown behavior to be tied to things like fur color, digestion (biome) and immune systems. The more they are bred for specialties, the crazier they get. This explains a lot about eurocentric groups...but I digress as they do. The point is that life and its complexities are less about DNA specifically, and more about the epigenetic integration with the environment (including other species of everything inside and outside the body).

Civilization has befuddled humans with luxuries, and now we try to be even more 'civilized' (intelligence within the domesticated realm, which is really a variety of stupidity as far as nature is concerned).

We don't need to make more insane humans. We can do that with computers now.