Really it's a responsibility thing. Seeing as Human beings have made such a large footprint already, it's up to people to develop a culture where a more minimal footprint is made, spiritually and physically, and although I think it might have to set people back for a bit in some ways, they will be able to take a few more steps forward than they would have been. With our degree of evolution and free will comes a duty to use our engorged cerebrums to understand the collective nature of our species and to try to ensure it's survival, as a collective organism.
Now as far as nature being brutal goes, I say it's unforgiving, and so balances itself. We can expect a very brutal blow, sort of a collective return karma considering the impact we've made and continue to make. So I think that minimizing the Karmic footprint is an admirable pursuit, and I'm willing to do it at the cost of a lot of things. And roll with whatever the planet gives us, which comes down to understanding and respecting how it works. Sort of a Gandhian model of simplifying and spiritually refining one's life to maximize the useful impact on one's surroundings, and minimize the harmful.