Comment by TheOtherHobbes

People are still slaving and raping, and some people would clearly like to do more of it. Child sacrifice still happens in more abstract forms. Same with human sacrifice, arguably.

We've never solved the fundamental problem, which is that there are two kinds of human. One is oriented towards peace, cooperation, and mutual aid, the other is sociopthaic/narcissistic and murderously selfish.

These two modes interact through history.

Traditionally the second kind has the biggest impact, because they're oriented towards violence and domination - good for short-term goals of personal indulgence, ambition, and expansion, but catastrophically destructive in the longer term.

On this cycle the second kind has literally started to destroy the entire planetary ecosystem. It's not obvious there's going to be another human cycle after this.