It is very hard for people to avoid dragging in anthropomorphic assumptions. A person will scream and curse at a door jamb for crushing their thumbnail. A person will fantasize about smashing a printer. The idea that an AI might exterminate humanity with no more feeling or hesitation than a combine harvester obliterating a colony of groundhogs is not only uncomfortable and unpleasant to people, but also unnatural to our psychology, which looks for agency and moral responsibility in door jambs.