I'm not sure our settings for considering endangered species are quite right. Someone told me a long time ago that "[...] like any other wild animals, their biggest threat comes from mankind". With 2000 giant pandas alive and 7.5 billion bipeds, yeah, that's about right.

I think we've profoundly failed as a species. Apart from bringing almost all living things on the brink of extinction, and nudge about every stable ecosystem that was prospering before us, what have we done? What kind of prowess have we achieved? Did we land on another planet yet? Did we built a cohesive hive mind shared between every individuals alive?

Earth doesn't more humans, and if we could shave around 2 or 3 billion right now, that would be alright. Problem is, humans tends to get nervous when you apply natural selection to them. Eating cows? No problem. Getting chased by something with large teeth? Nope nope nope nope.