I agree Chordy, it’s natural to fear death.
If you look at it from an evolutionary perspective, the people who were afraid of death would run away from it, and live to spread their genes. Those who didn’t fear it, would risk death and perhaps die, and be unable to spread their genes.
So, we are the heirs of people who feared death, who avoided it and lived to have children.
And the thought of not existing, is something that perplexes out brains. We can’t get our heads around it, and it makes us afraid.
Me I fear death, but… so what if I’m afraid, life is harder.