https://waitbutwhy.com/2015/01/artificial-intelligence-revol...
https://waitbutwhy.com/2017/04/neuralink.html
EDIT: I am getting a lot of downvotes for this comment. And just to clear up intention, all I am trying to say here is that yes, technology could be deleterious but we can prevent it in ways other than concluding “and that’s why we have to start blowing shit up and killing people”. I don't see why that's offensive.
So, while it's possible that AGI will be as bad or worse than competing with a more powerful and intelligent species of animal, they're not animals, and probably won't behave like animals. Increasing chimp intelligence, on the other hand, is probably not a good idea. Bonobos, maybe. Not chimps.
Also missing from the discussion is that intelligence isn't the only danger from competitors for resources. Insects collectively weigh a multiple of the total human biomass and many of them would eat us all, given half a chance. Microbes could evolve to kill us all, directly, or by modifying the ecosystem.
My response to the theory that an all-powerful computer intelligence will one day have us at it's whim is why would it even care? For the same reason it lacks empathy, it would also lack any ambition or fear or jealousy.
The bigger risk is relying too much on A.I. built for very specific purposes (ANI). A contrived example would be putting A.I. in charge of managing the nuclear arsenal. A bug in the A.I. that caused a pre-emptive strike could wipe out all life on earth.
Part 2, although I know where I intend to take it, is very inchoate at this point for a reason that I mention in a postscript to part 1. I'd love to have any feedback anyone would care to provide! It'll be of great use in improving the back half of the essay.