In a good and just world, yes, there should never be nuclear weapons. Unfortunately that is not the world we are in. Maybe this would be possible once imperialist countries are remade, but before that it seems like the worst game of chicken. I see quite a few barriers to this:
what country opposed to US interests in their right mind would destroy all their nukes before the US gets rid of theirs?
Even without nuclear weapons, the war machine of America can cause destruction on a similar level as nuclear weapons to a single country, it would just take more missiles and more planes, why would somewhere like the DPRK ever risk being attacked in such a way without a threat of retaliation?
you get into that weird territory of who is overseeing these decommisions and how are we ensuring no nation is hiding more weapons or facilities to restart their stockpile?
In a good and just world, yes, there should never be nuclear weapons. Unfortunately that is not the world we are in. Maybe this would be possible once imperialist countries are remade, but before that it seems like the worst game of chicken. I see quite a few barriers to this: