It was created at wartime. Not as a civilian project. Developed as a weapon. And other countries were developing nuclear weapons as science of it was never a secret
Destruction display did caused the governments to come together and build frameworks and structures to avoid the repeat of it
Which again, is completely different than giving access to every human being on the planet, then trying to figure out how to regulate it later.
Out of the gate access was restricted to government use, and a limited subset of governments at that. There was never a point in time it was handed out to any private citizen to do with as they pleased.
As for “we haven’t seen the destruction yet” - huh? Between the proliferation of hacks utilizing AI and drone warfare in ukraine we’ve ABSOLUTELY seen the destruction already.