As an aging millennial, I am surprised by how the process of time works.
Like you spend your life acquiring skills and using your knowledge in an ever expanding cornucopia of experiences.
Then followed by a gradual decline to be left only with your memories of who you once were. But then you realize you were only a small part of the existence of others, and ultimately the universe. Yep, the thought of faculties diminishing over time is enough to put the one into an extensional crisis.