I am really enjoying this discussion despite slightly disagreeing... I think that you have a very hopeful view, and it stems from trusting that a superior intelligence will also have a good heart... But empathy is not something that can be easily extended to something that is very different than yourself.
For example: the AI doesn't know physical pain, it simply cannot comprehend our physiological needs and struggles. It might see us as biological mechanisms that break easily... it might even determine that it's too flawed to sustain... It might feel the need to temper with out genetics to make some improvements that will suit its model of "what is good" - similar to how we change the genetics of plants, birds, dogs, horses - we basically engineered them to suit us (with certain mutual benefits to them).
And we don't really care to ask how they feel about all this.