Earlier quoted context omitted.
For all we know, we're the brightest light of consciousness in the universe. (Hopefully not, feel free to prove me wrong). Expanding this consciousness seems a worthy goal. In terms of "killing" the Earth. It's not really possible for us to do (yet). We could surely kill humanity but we cannot possibly eliminate complex life from Earth. More interestingly, I think we have a burden placed upon us by our own developmen…
> We could surely kill humanity but we cannot possibly eliminate complex life from Earth. Why do you think nuclear war can't do that?
The currently nuclear stockpile is about 1000x short, with some very friendly assumptions about our capabilities.