most likley,speaking as a person who has had a few close calls when your looking death in the face all the trivial little sht in life kinda just dissapiers and all you can think about is survival,i suppose thats self preservation kicking in?
I have faced this, I found I was more concerned about the task faced by those I was leaving behind. It really bothered me that there were so many things I still had to take care of. Interestingly, since overcoming my situation, those same loose ends are still unaddressed, lol. I'll take care of them tomorrow????? lol.
I think people fear sickness and the pain of sickness and may be pain that death brings to loved ones..
Coming from personal experience...very fearful.
I think some do and others don't. I have never been afraid of dying, but of course, I'm not ready tonight.