I like this idea of fear of death that was discussed. I believe we got it all wrong. One can never stop existing at least from ones' own perspective. Remember when you went to sleep and then you woke up? Do you know how much time has passed while you slept? Your experience might tell you it was approximately 8 hours but you don't really know. Might have been 10 years. For you it's only the momement just before you lost conciousness  and then regained it again. So when you die there may have trillions of years passed before your conciousness reappears again but from your own perspective it's a continuous experience. You may not remember what happened before but it is still YOU.