But we did finally realize that other races aren't inferior. And that women are equals. So I have hope, that some day we would stop taking their lives just for having a good time. Killing them isn't essential for our survival, or even health.
Who are you speaking on behalf of when you say "our"?
The species, obviously
Not to be overly argumentative, but what a small world view you seem to have. The world certainly doesn't realize that other races aren't inferior and that women are equals. Sorry =[
Why not? We'll move on to better things and eating corpses will be just gross.
It would be too gross even today for many people if there weren't any people with stronger stomachs around to prepare and partition corpses for them.