WHEN YOU DIE, YOUR BRAIN IS STILL ALIVE, WHICH MEANS UR NOT REALLY DEAD, BUT YOU DON'T KNOW THAT, BECAUSE UR NOT CONSCIOUS BECAUSE YOU TECHNICALLY NO LONGER EXIST, IT'S PITCH BLACK DARKNESS, BUT YOU WOULDN'T KNOW THAT BECAUSE YOU NO LONGER HAVE CONSCIOUSNESS, TO COMPREHEND THAT OR ANYTHING AT ALL; PEOPLE WHO BELIEVE IN AFTERLIFE