"Nothing about my love has ever been about duty." Not even his love for Raphael or Michael was wholly about duty. He loved them because he simply did, not because he had to. "My love for them, least of all."

He loved humanity because they were beautiful and because free will was something to be cherished, bad choices and all. He loved individuals because they were strong and good and fought for what they believed to be right, sacrificing everything they had and everything they were for it. Most of all, he loved Dean for these reasons, but he saw many of the same qualities in Raphael, too.