Having a chronic, fatal disease has been the catalyst for thinking about death. My preferred way to die is a death that is similar to falling asleep, whether that sleep is natural or drug induced.
First, I often realize that I am becoming sleepy. I do not, however, know the actual moment at which I fall asleep. Analogously, I want to know that death is near so that I say a final goodbye to those whom I love the most but feel no desire to know the actual moment at which I die.
Second, falling asleep is a natural, non-threatening process about which I harbor no fears. Although a tiny minority of individuals may fear falling asleep and never awakening, I know that death is an inescapable and natural part of life.
Third, compared to a slow lingering death in which the dying person retains consciousness to the very end, a death similar to falling asleep seems attractive, gentle, and almost familiar because I painlessly fall asleep every day.
Fourth, if there is life after death, then I am happy to place my future in God's hands; if there is no life after death, then death, if like sleep, offers a comfortable end to consciousness and being. Sleep entails time passing while I am completely unaware of everything (unless I am aware of my dreams), including the passage of time.