70 years is not a useful timeframe for analysis of human warfare. Historically speaking a 70 year peace could be considered brief. Recall that empires have lasted thousands of years, city states have warred on and off for centuries, warlords have emerged with a cadence measured in centuries and great conquests on a cadence of thousands of years.

70 years is a blip. Compare that to the 6 known close calls where all-out nuclear war was narrowly averted and we’re not looking great. (What is that about once a decade?)

I’d say there’s a 50/50 chance I’ll see a nuclear war in my lifetime. And if it gets out of hand billions of people will die.

I’m not sure the invention of nuclear weapons was a net positive for the world.