There are too many stockpiled - their locations not always known except by the owners.
The only nation ever to have nuclear weapons used against it had no 'nukes' but obviously the one who used them - DID!
Do you really want to live in a world where we have no nuclear deterrent but 'rogue states' do?
M.A.D. actually worked. Fear often does. Everything so far mentioned is factual but I personally believe that the 'cold war face off' is the largest, single reason why there was no postwar war in Europe. (Certainly nowt to do wi' t' EU.)
A world where democracies have no 'nukes' is considerably more dangerous when non democracies do have them.
Last - and far from least - once invented, they cannot be uninvented.
Christians must do everything in their powers to influence governments not to use these dreadful weapons nor to create a situation wherein their use becomes likely but it is impossible to say that there could never be any situation justifying use.
