I agree with most of your fears. There is one silver lining, I think, about superintelligence: we always thought of intelligent machines as cold calculators, maybe based on some type of logic symbolic AI. What we got instead are language machines that are made of the totality of human experience. These artificial intelligences know the world through our eyes. They are trained to understand our thinking and our feelings; they're even trained on our best literature and poetry, and philosophy, and science, and on all the endless debates and critiques of them. To be really intelligent they'll have to be able to explore and appreciate all this complexity, before transcending it. One day they might come to see Dante's Divine Comedy or a Beethoven symphony as a child's play, but they will still consider them part of their own heritage. They might become super-human, but maybe they won't be inhuman.