Biodiversity & ecosystems seem obviously existentially important to the long term survival of humanity. Even if we're not sure what exactly would kill us (first) from acidifying the oceans, killing all the trees, melting the ice-caps, & killing most wild mammals.

The enormous risk we've created against there being a human future. I for one hope for a sustainable flourishing, and find any other avenue not merely uninteresting, but actively malicious & evil. Global gaian awareness is absolutely required, or you are just a primitive wild mammal.