I have come to believe with my heart-and-soul in something that can been aptly summarized by Jonas Salk's incredibly profound and well-thought quote...
If all the insects on earth disappeared, within 50 years all life on earth would disappear.
But on other hand, if all humans disappeared, within 50 years all species would flourish as never before!
This is an excellent summary of the state of mankind (I hate to use the suffix 'kind' in this context!) as I see it today and for a foreseeable future.