I am afraid of being infirm, losing my mind, and going through an agonizingly paintful death.
The thought of oblivion makes me incredibly sad. I like life too much, would love to see what happens in the world, see my children and grandchildren's lives and so on. I don't cherish the thought of not being anymore.
But once I am dead I won't feel anything, and my consciousness will be gone, so there's nothing to fear about that because I won't realize it since I won't exist any more. Just sadness at the prospect of it.