Yes, there is a point.
Iran. North Korea. Any other belligerent aspiring powers. The reason we haven't bombed both of these countries substantially is that we have nukes. Even if they get them, we hope that our arsenal will serve as a deterrent to actual war.
Also, such countries will develop these weapons whether or not we have nukes. If we dismantle ours, that gives them the upper hand, and forces military intervention. Sanctions certainly never stopped anyone, determined enough, from developing nukes.
I don't think we need to build more. I think we need to focus our efforts on eliminating the threat such weapons pose to our cities. If we can effectively and reliably defend against nukes (however they may be transported and detonated), THEN we can eliminate nuclear weapons. As of right now, we must have them. Just to have them. It is sad, but it is true.







