This one just wrecks me. Mike Shinoda writing about a friend who died. All the little reminders that crush you in your everyday life, the void you feel without them, even some survivor's guilt mixed in to those lyrics. The question and answer chorus of "who cares" and "I do" is like a helping hand being offered through the darkness. Everything about the song was perfect enough, they even named the whole album after it. Then Chester commits suicide. What would that have felt like to know you wrote THAT song, your friend heard it and he still committed suicide? Not only had he heard it, they performed it and dedicated it to Chris Cornell who had just committed suicide at the time. I'm glad it got released in that wake because millions of people need to hear that message. If I were Mike in that scenario I don't know that I would have had the strength to send that message rather than just give in to hopelessness and question everything at that point.