grow enough food for the projected maximum population, especially with advances in GM and plant cultivation - and terraforming the planet is not going to be required to do this.
generate ample non-fossil, nuclear, power to keep the whole planet going for centuries
Why not focus on that? You know, the solutions? The upside? The gradually reducing poverty and increasing education standards? The declining death toll to disease, hunger and 'climate' disasters?
I don't doubt that some part of the environment will be given over to keep the human race alive. I'll prioritise people, if that's OK with you.
Lastly, I read your post as "something something wah wah wah