Are you a person dreaming you are a butterfly? Or are a butterfly dreaming that you are a person? In each experience at that time, you are what you are regardless if you wonder about the other possibility.
And there is no escape from that reality at that moment. But that unanswerable ponder is the one reality that paradoxically is true and constant… and if you ignored or destroyed your current reality, it would undo the other unknowable one as well and would result in total, absolute annihilation of all possible existences you previously held. There would not even be a question of “is there life after death?” Because the possibility was destroyed by you in this current reality.
You think that pondering the question is mentally bankrupt exercise but in reality, it is the constitution of your existence in all worlds.