The question of an after life is entirely irrelevant.
Death, and the "thereafter", cannot really be known outside of those that have experienced it.
Unfortunately, they're not well enough to share their insight.
Some find solace in the concept of souls and an afterlife through "psychics", ghosts, religion, faith, ignorance, and so on.
Likewise a common argument on the part of the opposition is that conciousness exists solely in the brain, once it's blood supply halts, the mind "dies" with it.
The real truth is that it's an equivocal situation.
If an afterlife is existant, then the only one's to tell us are those that have already passed, and "visions" are easy to equate to hallucinations and delusions.
On the flipside, if someone dies, and their conscious mind dies along with them, the idea of a soul/afterlife would have utterly no relevance because, well, they're dead.
The truth of the matter only comes at that given moment. Speculation is fodder for my psuedo-intellectualism.
or how about this concept...
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"That is not dead which can eternal lie; and with strange aeons even death may die."- H.P. Lovecraft