We are doing exactly what any other, less intelligent species is doing too: myopically exploiting the environment to fuel instantaneous growth. Wolves don't think, "heck, let's leave some deer around and limit our offspring so we may prosper next year".

Of course we should know better, and be kinder to our planet, for our own good. As far as nature is concerned, we are doing what nature does. And if we go extinct as a result, that's part of nature too.