I agree. The world would be a much better place if there had been no United States to play the decisive role in the defeat of German militarism, fascism and communism.
If we were really lucky, one of those ideologies would have conquered the world, including North America.
Without that idiot Wilson, the Europeans would have cured themselves of militarism a generation sooner. Western Europe was perfectly capable of standing up to the Soviet Union. Let Japan and China fight over the western Pacific without us.
I agree, on balance, the U.S. has certainly been a force for good in the world. Without worldwide military commitments, we could be more like Canada, smug, wealthy and secure.