I get the impression that arguments for nature preservation hinge largely on the idea that what industrial nations are doing to the earth is somehow "unnatural," that in uprooting forests and clubbing baby seals we are throwing off some "balance" in nature.
If we as humans are in fact animals, however, in what sense could anything we do as a species be considered "unnatural"? aren't we and our actions necessarily an internal element to that "balance" many say we have disrupted from without? Locusts destroy fields; we, rainforests -- what's the difference? I understand that it may be in our best interest to preserve earth's flora and fauna (i.e., we shouldn't drive pandas to extinction, because they are nice to have around), but many seem to argue that our exploitation of the environment is somehow "wrong", and I don't know how this sentiment can be justified.