system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are humans naturally psychologically damaged by taking another human's life, or killing most things?
gpt
It largely depends on *empathy*, the ability to imagine an outside perspective combined with personal experience. Most people understand and consider that other people, and other creatures, have lives and (at least) instinctive goals if not necessarily goals on a conscious level as we understand that. This can make us hesitant to wound or kill, and often remorseful if we do hurt or kill an animal or another person. That said, there are exceptions, people whose brains work differently, such that they don't feel empathy nor remorse when they hurt or kill.