The history of man is a graveyard of great cultures that came to catastrophic ends because of their incapacity for planned, rational, voluntary reaction to challenge.
Morality is not just any old topic in psychology but close to our conception of the meaning of life. Moral goodness is what gives each of us the sense that we are worthy human beings.
After Darwin, God's role changes from being the designer of all creatures great and small to being the designer of the laws of nature, from which natural selection can unfold, to being perhaps just the chooser of the laws. By the time God's role has been so diminished, he becomes a bit like a constitutional monarch, presiding ceremonially but not having any more work to do. That's a place for God if it makes people comfortable to keep God as the presider over the universe. I suppose that is satisfying for many.
Perhaps there is no such thing as unilateral power. After all, the man in power depends on receiving information all the time from outside. He responds to that information just as much as he causes things to happen... it is an interaction, and not a lineal situation.
There was no doubt that this poor man [William Blake] was mad, but there is something in the madness of this man which interests me more than the sanity of Lord Byron and Walter Scott.