Many born-in Jehovah’s Witnesses are subjected to the teaching that they’ll never die. This usually starts from a very early age.
Even as an adult, years after getting out of the JWs I had issues coming to terms with my own mortality. In the back of my mind there was a constant thought that somehow I wouldn’t die, even though consciously I knew it would/will be a certainty at some point.
Did anyone else have trouble coming to terms with their own mortality?