Truthfully, I say this as someone who would rather there was no need for nukes... but as long as places like North Korea, Pakistan and China have them, as long as places like Iran want them... then the rest of the world would be stupid to get rid of them... They would be destroyed if they did.
The point of them as weapons is that if you ever need to actually use them, they've failed in their purpose. If there were no nuclear weapons (or other WMDs), I'm fairly sure the Cold War would have become World War 3 and would have seen tens of millions of deaths through conventional warfare.
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