Let's assume that humans thus far have caused a net-negative on the earth, through wars, environmental damage, animal extinction, etc. Let's also assume that h

Let's assume that humans thus far have caused a net-negative on the earth, through wars, environmental damage, animal extinction, etc. Let's also assume that humans have the potential to be net-positive. Humans can create environmental restoration projects could potentially prevent an asteroid catastrophe. So I would argue that humans are still in their infancy. Once we get our act together, (which could take a few more millennia) we will eventually be a blessing to the world.