What's the purpose in holding onto something that's trying to let go?
There is no reason, because whatever it is you are holding onto, is just going to slip out of your hands. That is, unless you are holding it with your heart. What else could feel someone with no sense of touch? Or see the pain that hurts so much. Or be the support; someones crutch.
Whats the purpose in holding onto what's trying to let go? It depends. If it's your hands, there is no meaning. But if it's your heart it means everything.
If there was one thing Richard Castle knew, it was that he was selfish.