I have accepted death completely, and I find death from age to be a quite beautiful moment, though it's still extremely painful for me to see/hear otherwise. I had experienced quite a few close deaths early in my life, including my paternal grandparents, my best friend, my moms brother and then my maternal grandmother. Death annoyed me at that point, I was more angry than sad, and it wasn't until my maternal grandmother passed away when I was 13 did it effect me otherwise. Everyone in my family hated her, but I was young, and had no reason to. I was alone in the room with her when she passed away. I asked her how it felt to die, among other things, and her lasts words were "the only more beautiful moment was the birth of your mother and uncle". Everything she said that day made me feel a lot better about things, simply put.
I do fear being stuck underground in a small coffin for eternity, though, in case I'm still pseudo-sentient. Which is why I'd like to be cremated with my ashes spread around the world, that way I would at least see it all once in my "life". To return to the earth and become it. That's really my only concern about death.