ok so the OP turned this in to a PETA thread. I love all Animals. I have three cats. I eat Chicken, fish, bacon, pork, Cow, Deer, rabbit, Any Sushi, and just about anything once considered an animal. I am a Science minded person and believe humans do need to grow up as a species.
But if a Species can not survive this period of global history, then we should cry for no more than a few seconds get over it and move on. Humans are the greatest force for evolutionary change right now, and I think that is a good thing, not a bad thing. However its ok to lament the weak species which couldn't make it.
As for Zoos, I'm not a fan. If we pen up animals and don't eat them or breed them domestic in one way or another it is against evolution to do so. but freeing them is silly, since all animals in a zoos are as good as dead to nature. Since they serve no purpose.