Though still entirely theoretical, biocentrism offers those of us who want to hold onto a comforting afterlife scenario, without giving up a devotion to science, an avenue to explore.
On biocentrism, consciousness is essential to the universe. It is a force, quasi or actual, within the universe. Given this, biocentrists argue that biological life must exist in all universes. All well and good, but this is all gauche and there’s a reason why I abjure the supposed comfort provided by any afterlife concept. A biocentrist’s idea of the afterlife is no different.
Though I don’t put much stock in mainstream wisdom–the kind of “facts of life” you get from Facebook posts and Tweets, YOLO, which is short for “you only live once,” is a good bit of wisdom. For many, the important word in the phrase is once. For me, the important word is you. This is why I don’t see why anyone can find the biocentric afterlife comforting. It’s based on the conservation of matter and energy. The conservation of matter and energy does not entail the conservation of your consciousness in toto. All of your current memories and personality traits are conserved; that’s neglecting the fact that those change at different points throughout your life. In other words, the memories you have today aren’t the ones you’ll recall ten years from now. To my mind, no afterlife concept is comforting because none guarantee the conservation of the you. You only live once and the biocentric afterlife doesn’t change that.
Even on a multiversal view in where you die in one universe of a heart attack at 54 years of age and then awaken in a universe in where you didn’t die of a heart attack, while you are conserved, your death in one universe would be a mere dream in the one you’re currently in; perhaps you’ll even remember it as a dream and perhaps every dream we’ve ever had about dying is a recollection of having died in another universe, albeit not in the same way we did in the dream. Your consciousness will continue to transport from one universe to another until there are no universes in where you’re alive in.
This, however, isn’t necessarily an afterlife; to you, it would be as linear as the life you lead now. Yet I don’t see how one’s consciousness would continue through universes. Even if consciousness can be in several different states simultaneously, i.e., superposition, it’s quite the leap from superposition of consciousness to superposition between universes. This would imply that the same physical constants and laws apply to all universes. On most accounts, the multiverse isn’t full of universes that are physically equal.
With that in mind, the biocentrist’s afterlife should be no more comforting than any other concept of the afterlife. You truly do live once. That’s no doubt less comforting for some, but it is no less true.