What if we die..

What if when we die the light at the end of the tunnel is the light to another hospital room, where we are born again and the only reason you come out crying is because you remember everything from your past and you're crying because you died and left your loved ones behind. As you grow you start to forget your past life and focus on the life you have now, but then you get patches of your memory back and that's what causes deja vu..