User blog comment:Icemoomoo/What happens to the Dragonboren after he is dead?/@comment-162.197.120.214-20130830072002

The dragonborns soul is that of a dragon and dragons are immortal... Hence why the dragonborn is the only one who can really kill them. My bet is that he becomes a divine. Perhaps all the divine were once dragonborn. This isn't too far fetched considering deities like stendarr and arkay and talos were all humans.