Well, since I don’t believe in a God in the traditional sense, that means I can’t, by extension, believe that the world was made for us in any way. We just happen to be lucky enough to live here.
That said, I’m an old-school conservationist à la Theodore Roosevelt, and I believe that we should be able to use and enjoy nature at our leisure, but we should do it responsibly and respectfully. The fact is, we need what nature has to offer to maintain our modern, industrialized and comfortable society. If we don’t responsibly use nature, our society will crumble, but if we exploit her, than we are also fucked. Therefore, moderation is key. Not many people really want to live in mud huts anymore, and nobody wants to live in an irradiated, toxic wasteland, so it’s best, in my mind, to take the route I describe.