I call Death "the big door" ( borrowing a reference from one of my favorite writer's titles, "Slam the Big Door." ) because it's either a door that opens into another world, or the final slam in the face that has nothing beyond it but endless night.
When I was a young man, I wanted to be fully concious while dying so I could analyze and observe each moment- but now? I'd really rather not know about it. Seen too much of it.
Ha! I know what you mean.
I think at the end (if a tree doesn't get you earlier) you're ready for a rest.
For some reason my personal memories extend back to the day of my birth (and even before that). So, it's always been my goal to occupy my last few moments of life visiting memories of my first few moments.