There is a yin and yang to nearly everything in reality. Without this great evil, it's entirely possible humanity might have remained completely stagnant, or even have begun to regress. Stick 1000 people in a utopia where they have everything they need to subsist and endless digital entertainment. You've now set those people on the path to idiocracy. By contrast, put 1000 people in an oppressive environment where the only path to survival is ingenuity and you've laid the groundwork for creating the great thinkers, and creators, of tomorrow.

The Nazis were a large part of the reason that our technological development accelerated like nothing before, or since. We went from having never even put a man in orbit to putting a man on the moon in less than a decade - which remains what I think is by far the greatest achievement in the history of our species. A great evil created resulted in the most unimaginable good.

The times since then remained dominated by yang. We've had relative peace, prosperity, and our greatest threat was literally just a threat. And so now we are in an era where after decades of technological devolution we struggle to even fly a rocket by the moon, unable to come even close to replicating what we achieved with seeming ease some 50 years ago.