I'd like to take any of these "mankind is destroying nature" types out of whatever they live in, slap them into the wilderness with nothing on, no food, no gear, no weapons, and no camera crew. We'll see how long they last. There's far more nature out there than there is mankind. Most of nature has been untouched.
It's like the argument some morons made about not putting a Walmart near where they live. One idiot argued that the Walmart would squeeze out the space for all the critters. I would have loved to have been there to laugh at him. I'd ask two questions. 1) What about the poor critters displaced by your neighborhood/home? and 2) We live in the frickin' desert. Just 300 feet away is access to more open space than anything the Walmart would consume. Do you think the wildlife is going to die out because it's too stupid to move a hundred yards?
In the movie Kiss The Girls one woman was killed by doing nothing other than tying her to a tree and letting nature do the rest. Not only a brutal death but untraceable because no weapon, no marks and a brand of rope that could have come from anywhere. Scaphism also made use of Mother Nature in all her glory.