I think that nuclear weapons are the main force keeping world peace among the superpowers. If widespread nuclear disarmament were to take place, it would seem good in the long run, but let's say that some nuclear nation decided to cheat and keep several hundred warheads and bombs hidden in a secret arsenal. Then, once other countries have dismantled their arsenals, that country that kept a secret arsenal could suddenly reveal their arsenal and invade other countries and demand territory. No other country could stand up to them, since no other country has a nuclear arsenal. Conventional weapons are no match for nuclear weapons, and the world would fall to the cheater's feet.
Nuclear weapons are horrible and are undoubtedly the most destructive things man has ever created, but they are necessary. Without reliable and powerful deterrence, a country could be walked over and invaded and taken over. Nuclear weapons are the deterrence for the most powerful countries that need the most powerful deterrence options.
Well I don't think that nuclear weapons are nessesary because it causes serious damage. It can kill people in an intant. It is also very hurtful and i need to go to school soon so we probably won't be able to finish the debate.
And that serious damage is exactly the reason why we need them. Without that threat of serious damage, the world would be just like the 18th century, with countries just attacking one another because they want to.
Well but with the certain amount of nuclear weapons you can destroy the whole world and it os not nessesary to kill innocent people that didn't do anything to harm us. The only people you would want to hurt are the people that harmed you.