The US and the USSR engaged in a race to have the most nukes. After the fall of the Sowjet Union international treaties were put in place to reduce the number of nukes in both east and west.
Don't quote me, but if I remember correctly, at the height of the cold war, both sides had more than 12.000 nukes each.
Humanity had enough fire power to delete the entire globe roughly 40x over then. Why? Because bigger is better.
I don't post nearly as much as I would like, because I post some stream related stuff in my own community on lemmy and don't know want to come off as someone who is trying to advertise all the time. I have been reported for that posting to my own community, which... ya know. I get it, nobody cares about yet another streamer dude, but it is a bit intimidating almost.