Yeah, my guy and I have our passports ready. What's not so clear is where the hell to go.
World war 3 will not spare anyone. It will cover the world, be everywhere, and exercise the weapons that will destroy our planet.
The place to go when it starts is the location of the nearest, most strategically useful gun with which to shoot and kill fascists and defend freedom.
Maybe at the end of it all, the dump fight will have freed us from the unilateral desire to aggression once and for all, even if it has also freed us from the conveniences of modern life forever
Nah, that's not been plausible since the 1990s.
World War three will likely kill billions, but there will be plenty of neutral countries who will suffer no direct casualties, and whose population will see no more than a bit of economic hardship.
As long as you steer clear of the major northern hemisphere powers, you'll probably be OK.
Though the time to move is now. The longer you leave it, the less likely it is that any of the safer places will still be admitting refugees.