Research in education has shown that we remember field trips long into adulthood. I remember visiting the post office in second grade and looking at the sorting machine. I have vivid memories of that, when I don't even remember the name of the teacher who took me.
Also, where does your identity come from? Your memory, of course.
Some memories are best absorbed through your eyes in real time, even if you have no record of it later. Because then you can access that memory and how you felt in that moment. If you're looking at your cellphone screen, taking a video of something that is otherwise unforgettable, watching it later will not recover the emotion you would have had, had you witnessed it directly.
Your center of mass is a place you cannot visit but you always carry with you. Like memories, it is part of life's baggage.
Who you are, where you've been and what you've done is all up here, captured and preserved in your memories. If you lost that - the story of your own origins - you'd lose your identity, your sense of self.
