Granted. Nobody fights, bickers, or argues any more. Wars cease. With the death rate dropping to half of what it is, globally, in the first year, and continuing to decrease after that, the world reaches its population capacity very, very quickly. The net result is that most people in the world will starve to death; billions. Then, eventually, it will stabilize, but a pattern of behavior is set.
I wish for a bottle of root beer.