You're right, maybe people are not "actually" trying to destroy it but ignorance is. Stupidity and power, bad combination. Right again, the only problem is that before the last 100 years or so it took thousands of years (or at least hundreds) to change the ecosystem now we are changing the planet in decades. It means knowing that we are part of a whole. It means that we should at least know (being the intelligent beings that we are) that what we do affects all the planet, for better or for worse. We don't have to know how everything works, animals don't but somehow they understand the balance of nature and act accordingly. Somebody made a comment about animals being there for us to decide what to do with them, going back to the begining: Power+stupidity bad combination.