At this point, what does it matter? We all NK is always going to develop missiles, nukes, and other weapons. As long as they don't sell to terrorists, and if the country collapses someone responsible can swoop-in to prevent them from getting into the wrong hands, what concern is it of the US? Perhaps NK's militarization is the only thing that has prevented a very bloody war from erupting there over the last 15-20 years. Perhaps my disgust at the state of both US and world politics has just eaten away at me over the last few years. I don't know. I don't feel the energy or the reason to be outraged over this right now.
Why is it important to you?
Because the country is ruled by a bloodthirsty and inhumane despot. The more weapons they have, the more they become a potential danger to the countries around them and a destabilizing influence to the rest of the world. And the more it solidifies the NK government's security, the more it ensures that their own people will continue to suffer.