Humankind - Nature's Biggest Blunder or Greatest Sucess ?

The Purpose of nature simply, is to survive. For life to appear was already very unlikely, so of course nature would try to ensure this consistency. In order to do this, organisms are at constant pressure to evolve and adapt to their constantly changing environment.

We all, as humans have made ourselves stand out in nature's massive number of organisms.
Our first advantage was the development of intellect, that we became smarter than anything else on the planet. However, with this intellect, we started to be able to have a range of emotions, including concern for others' well being. We all helped each other, from the healthy to the sick and dying. By co-operating, the human race grew powerful and learned to manipulate the world like never before, utilising mankind's greatest feat - technology. Humankind has all slowly learned more about the earth, but instinctively - humans always came first. This resulted in mass exploitation of the environment. The Earth was changing at a faster rate than ever before - too much for most organisms to cope. Not even evolution, which developed humans in the first place, could match our speed. Most natural habitats have been destroyed, many species gone extinct and our climate changing faster than ever before.
So as a result of nature's will to survive, us humans have developed, and now we're destroying the rest of nature. At the current rate of natural habitat destruction, it wont be long before the world has lost almost all its natural habitats.
However, something can be done. If we stop all this exploitation, nature will eventually take back its land (there goes all our modern products). But this would not be an option - most would find it unethical to remove peoples homes, blow up cities and alot of other things that will pretty much kill off alot of the human population - even if it was for the benefit of the Earth.
Our own superiority will eventually lead to our downfall - once ecosystems collapse, there will be a massive chain reaction affecting everyone and everything worldwide - the most easily manipulated - the climate. The climate will probably change drastically in the next 50 to 100 years, raising sea levels, promoting more weather phenomena and a more hostile environment. The human race will be devastated by these changes but luckily nature will almost always recover (given time). A worst case scenario would be a mass extinction of the Earth directly due to human actions (e.g Nuclear War)
Now the human race is not all bad, technology has its uses. The problem with before is that we learned quickly, but not quickly enough to realise the consequences of our actions on the environment. However, the Earth is not all there is - we have discovered stars, other planets, galaxies, and many other things that could affect us. Human technology is currently being used to reduce our negative impact on the earth among other things. But we could do more - other threats lie outside the Earth and threaten the existence of life. What if an asteroid of decent size was to hit the Earth ? It could do more damage than we have done so far. But this is where our primary instincts kick in. We could use our technology to protect the earth from destruction, thus saving nature.

But is all this current destruction of nature worth it ? I predict that we will be forced to retreat to another planet after we've used up all the resources on Earth. Would the evolution of humankind result in natures overall survival or destruction? We'll have to wait and see.