So... doing something stupid, unnecessary, and destructive is impressive? Utter lack of self control is impressive?
There is no reason for us to be swarming over this planet like an out of control viral infection. We could be just as successful with technology, medicine, science, economics... etc. with a fraction of the number of people we have now.
Population growth causes far more problems than benefits, but we are too incompetent to do anything about it.
Yes, drastic population reduction is possible, and has been tried. It's called genocide.