Some versions of the afterlife inculde: Asgard, Valhalla, Hel, Paradise, Summerland, Nirvana, Elysium, The Spirit World, Elsewhere, Heaven, Hell, Avalon, Astral Plane, Happy Hunting Ground, Limbo, Sheol
These are parts of who we are, parts that we can't take to the grave and won't rot away with our body. Plus, I don't think people can stand the fact of saying the big 'Good-bye'. So afterlife is a way of thinking positive, even if there never is real proof. Belief is a strong emotion; it can do miracles.
What kind of afterlife will we be in?
Passive Theist: Our Soul either goes to Heaven or Hell or is Reincarnated
Christian Theist: I am going to heaven, you are going to hell.
Passive Atheist: The same thing that happens before we were born
Militant Atheist: Don't ask me stupid questions
Agnostic: I don't know