Why AI should care? Do we care about other species?- we don’t give a crap most of the time . I mean "friendly" AI probably wouldn't harm human just for sake of inflicting pain -it could be just a side effect of it's activity . - Same way humans caused immense damage to wild life as a by product of their life activity. It could be direct competition over resources/land . Humans are dangerous as they possess necessary power to destroy even higher forms of organization with ease (nuclear weapons) that’s why AI may decide to eliminate them .- Heck humans destroyed a lot of wild life species just because they caused inconvenience- not even because they posed any kind of threat to humanity as a whole.