Anyone with any sense would like to see the whole world disarmed of Nuclear Weapons. Of course that isn't going to happen because that particular genie is out of the bottle and all we can do is hope that nobody ever gets to use them again. The bombs we possess now are many more times powerful than the ones dropped on Hiroshima and Nagasaki and whatever the rights or wrongs of those two events, so the death and devastation would be even more horrific.
So why keep them hanging about? It is all about willy waving. America, Britain, France and all the rest of the Nuclear club (including Israel of all places to have such a devastating weapon) see them as a way to make themselves look big as they deal with other countries around the world. The subtle undertone as discussions with less friendly nations that we could obliterate you so play nice.
As Pakistan and India showed, and North Korea and Iran have taken on board, everything changes once you become a nuclear power. If i was in charge of either N Korea or Iran, i would be going hell for leather to develop the bomb and then parking it right in the middle of the town square.
Of course the biggest threat isn't from a country, its from terrorist cells and what good is nuclear weapons against them? None at all unless you are willing to take out half the country they are in at the same time.
So as much as i support the idea behind CND, it ain't gonna happen so save your subscription money and just hope that the uneasy balance between the haves continues and if the have-nots decide to join the party, well, you can't blame them.