Counterpoint: I am extremely scared of the fact that I don't exist on Antarctica and in the center of the Andromeda galaxy. And 10 meters below where I am. I'm just as dead on my roof right now. I'm dead in most of the universe RIGHT NOW and this is terrifying.

Update: I've just discovered I am not alone. Turns out Hannibal Hamlin, Abraham Lincoln's V.P., is just as dead/not in existence on my roof. This is very disconcerting and I hope there are no more ghosts like this in my vicinity.

Because you've become rather fond of existing and would like to keep it that way?

it's not being scared of that time after you've died, it's being scared of no longer being able to exist.