But there is now 7 billion people. And no, it's not just "People will have to move": +6 degrees in one century is a temperature change we haven't seen since humans appeared on Earth: https://www.xkcd.com/1732
So we need to come back to emissions of 1990 (when they balanced natural absorption), emit a even less for a while, but with 7 billion people, everyone has to emit much less than in 1990.
To preempt any question... I still eat meat and I don't see how I could do without.
Then stop talking about crimes about humanity. If you consider yourself a criminal, go and jail yourself.
Personally I don't think "going back" is viable, we should probably be trying to engineer ourself a new climate. Better than we had pre-industrialization.
Our planet was pretty messed up even before humans came. It was going to snowball.
So we need to come back to emissions of 1990 (when they balanced natural absorption), emit a even less for a while, but with 7 billion people, everyone has to emit much less than in 1990.
To preempt any question... I still eat meat and I don't see how I could do without.