> The number of people who want to do doomsday levels of harm is small and they are poorly resourced compared to people who want benevolent outcomes for at a minimum their own groups.
You're forgetting about governments and militaries of major powers. It's not that they want to burn the world for no reason - but they still end up seeking capability to do doomsday levels of harm, by continuously seeking to have marginally more capability than their rivals, who in turn do the same.
Or put another way: please look into all the insane ideas the US was deploying, developing, or researching at the peak of Cold War. Plenty of those hit doomsday level, and we only avoided them seeing the light of day because USSR collapsed before they could, ending the cold war and taking both motivation and funding from all those projects.
Looking at that, one can't possibly believe the words you wrote above.
We avoided having them see the light of day because MAD is the single most effective peacekeeping tool ever developed. The fact that both sides had doomsday devices all but guaranteed that they would never be used. People can be evil, but they're selfishly evil.
That works as long as you don't end up with death cults in the possession of those weapons. Long term it is almost guaranteed that you'll lose some control over the weapons or that some country will effectively end up being ruled by such a cult. Then all bets are off because your previous balance (a prime requirement of MAD) is disturbed.
MAD alone doesn't stop the race. The arsenal the US and USSR had in the 60s was already enough for MAD to work. Despite that, they spent the next 20-30 years developing even more powerful and ever more insane WMD ideas. Each step forward made the balance more fragile. Each step forward was also another roll of a dice, whether or not it'll be a leap too far, forcing the other side into preemptive first strike.
You're forgetting about governments and militaries of major powers. It's not that they want to burn the world for no reason - but they still end up seeking capability to do doomsday levels of harm, by continuously seeking to have marginally more capability than their rivals, who in turn do the same.
Or put another way: please look into all the insane ideas the US was deploying, developing, or researching at the peak of Cold War. Plenty of those hit doomsday level, and we only avoided them seeing the light of day because USSR collapsed before they could, ending the cold war and taking both motivation and funding from all those projects.
Looking at that, one can't possibly believe the words you wrote above.