Nothing worries me more than posts as senseless as yours, The Onlooker.

While we have gained much since those years, there is no doubt that we have also lost much. When airplanes stopped flying for a week or so after the September 2001 terrorist attacks the skies had evidently begun to return to a more normal colour, a deeper blue. Mostly, we do not really know what we have lost in the last 100 to 150 years. It is like going to the supermarket and thinking you can still buy a juicy peach.

You are betting that you can take the last 150 years, flip them around into the future, and the planet will continue to be a place where human life is viable. A little doubt would give you at least a little credibility.