We have the means to dismantle any countries infrastructure with conventional weapons, nuclear weapons are nothing but mass murder/destruction tools and as such are by definition barbaric. The idea that our nuclear arsenal is a deterrent from minor nations holding us hostage with a nuclear weapons is asinine. While some crazy rogue state might wish to detonate a nuclear weapon in order to kill a large amount of our population, us having nuclear weapons isn't going to prevent them from doing so since we can completely annihilate their entire military and civic infrastructure with conventional weapons with ease, without the unnecessary mass murder of a nuclear explosion.
Our nuclear arsenal's purpose isnt to protect us from small rogue nations, it's purpose is to protect us from large powers like Russia and China.
No matter how we feel ethically about nuclear weapons, we cant get rid of them until the other big kids do. Its that simple.
Now, If someone could convince Vladimir Putin and the Chinese Premiere to stand down, then it would be great, but I dnt think that Putin is willing to give up his leverage.