1. Desire for survival is crucial, its very unlikely AI will have desires.
2. The idea that something more intelligent than humans will be hostile to humans comes from a very human perspective, not a rational perspective.
3. Good and bad, justice, fairness and suffering are animal ideas, machines wont interfere intrinsically with them.
The future problem will be the economic model, not AI. Don´t blame an insanely useful tool, blame the user.