I don't support building even aligned super intelligence. I am in huge support of cybernetic and genetic enhancements to humans as well as uploaded minds. Based on your definition of super intelligence, I guess some of those may be considered such. It feels wrong to hand off the keys of the universe to something with no human lineage whatsoever even if it had something recognizable as human ethics and took care of us. It feels very much like being a kid with doting parents and that is bad in my eyes.