From Scientific American:
Everybody’s wonderin’ what and where they all came from.
Everybody’s worryin’ ’bout where they’re gonna go when the whole thing’s done.
But no one knows for certain and so it’s all the same to me.
I think I’ll just let the mystery be.
It should strike us as odd that we feel inclined to nod our heads in agreement to the twangy, sweetly discordant folk vocals of Iris Dement in “Let the Mystery Be,” a humble paean about the hereafter. In fact, the only real mystery is why we’re so convinced that when it comes to where we’re going “when the whole thing’s done,” we’re dealing with a mystery at all. After all, the brain is like any other organ: a part of our physical body. And the mind is what the brain does—it’s more a verb than it is a noun. Why do we wonder where our mind goes when the body is dead? Shouldn’t it be obvious that the mind is dead, too? And yet people in every culture believe in an afterlife of some kind or, at the very least, are unsure about what happens to the mind at death. My psychological research has led me to believe that these irrational beliefs, rather than resulting from religion or serving to protect us from the terror of inexistence, are an inevitable by-product of self-consciousness. Because we have never experienced a lack of consciousness, we cannot imagine what it will feel like to be dead. In fact, it won’t feel like anything—and therein lies the problem.
The common view of death as a great mystery usually is brushed aside as an emotionally fueled desire to believe that death isn’t the end of the road. And indeed, a prominent school of research in social psychology called terror management theory contends that afterlife beliefs, as well as less obvious beliefs, behaviors and attitudes, exist to assuage what would otherwise be crippling anxiety about the ego’s inexistence. According to proponents, you possess a secret arsenal of psychological defenses designed to keep your death anxiety at bay (and to keep you from ending up in the fetal position listening to Nick Drake on your iPod). My writing this article, for example, would be interpreted as an exercise in “symbolic immortality”; terror management theorists would likely tell you that I wrote it for posterity, to enable a concrete set of my ephemeral ideas to outlive me, the biological organism. (I would tell you that I’d be happy enough if a year from now it still had a faint pulse.)
More here.