Zahavasdad- I am not disagreeing with what you say and I think we do have an obligation to take care of our world. the question is to what extent and from what perspective. Hashem still runs this world, not us, and He gave us permission to rule over it and use it for our benefit. We might mess up, but Hashem sustains this world and can figure out how to keep it going even without our help.
A side point that I never understood- why is it that when a beaver family moves into a new river and builds a dam, thereby flooding the area and creating a new habitat, it is considered an amazing thing, even though the previous habitat was destroyed in the process, but when humans come in and clear land to build a new habitat (a new city) environmentalists consider it destructive?