I don't think it has anything to do with age but with the rate of new experiences.
Take a year off work to travel the world and you'll find your subjective sense of time passing slows right down.
Does it matter though? Does it matter how many experiences you collect? You can't take them with you. Better to develop relationships that can be a source of joy (I imagine. I have not done that).
It's a great paradox. What you say is true, but it is also true that a period of life with more novel experiences will also appear to pass more slowly.
Take a year off work to travel the world and you'll find your subjective sense of time passing slows right down.
Does it matter though? Does it matter how many experiences you collect? You can't take them with you. Better to develop relationships that can be a source of joy (I imagine. I have not done that).