Things like this are also a way of expressing and sharing gratitude, which is a cathartic exercise to engage in periodically. Putting into words "these are things I enjoyed" is worthwhile, in my experience, and sharing it is a small extra step. Additionally, sharing it can be a gift to the future. I can't tell you how much I appreciate effort my parents took to document parts of my childhood (vacations, accomplishments, daily life, etc.) and I know other children feel the same. It's the kind of window to the past that is only open through efforts like this.