There is a good chance that some destructive group will develop AI that is hostile to humans, to use as a weapon. It is then that I fear AI. Because if it's made in man's image, it's going to be violent, greedy, and out for itself from the start. Man created God, and that pretty much sums up the bible god.

There's also a possibility that AI will see humans as a virus, threatening the planet. They would be correct on that front too, and might seek to eliminate us for the good of the planet they inhabit.

I know these topics I raise have been debated before ad-infinatum, but since you asked....