We have an idea of what the end game is. That idea is most likely inaccurate. We cannot know where we will be once the experience has occurred. Our perception and experience will have shifted, and the world we once knew is no more.
That uncertainty creates fear and excitement simultaneously.
Beginnings are easy, but the end is hard to find. The process allows us to recognize the end only when the experience as a whole has been internalized.
Bet on the perception shift.