[Houshalter]

There is more than enough energy on Earth alone to destroy humanity. Most likely an AI would want to maximize it's energy. Covering the entire face of the Earth with solar panels, or even building a matrioshka brain from the mass of the solar system.

An AI not specifically programmed to value human life would have no reason to keep us around. It'd either kill us because it sees us as a threat, competition, or just annoyance, or it would kill us by accident as it consumes all the resources it can.