I wish nuclear weapons had never been created, but since they have, and the only country to own them was stupid enough to use them knowing there would be no reprisals, it seems to make sense to hold on to ours. Since WW2 they have acted as a deterrent and have not been used again, thank goodness. It would be great if every country who has a nuclear capability disarmed, and could be proved to have done so, but until that time comes, the UK should hold onto its weapons, imo.