Lots of of us have them form the time we were born to our current time not forgetting those memories from the past that are passed down through the generations but this whole subject has often intrigued me
For instance you may know of friends may be friends from your school days who when asked what they thought about those time might give you an account of how good they were or others who seem to have scarcely a good word to say about them but in each instance you feel a little uneasy.
Maybe that's because you remember stuff that happened that both of these two don't and when you add it to their accounts you might feel it alters the narrative you get from both regarding how they feel it shaped them.
Perhaps that's one function of memories. A Justification for who we are today?
But there's this other function we touched on, the passing down of factual knowledge about our pasts, that of our families, the communities and sometimes the countries they have lived in.
These maybe the order of family members -the "Family Tree", what they did and why as well as what happened where we lived and why it mattered. For instance a Saxon Cross near me was destroyed by people who thought it represented a form of Idol Worship and it's significance having been restored is to act as a reminder of the dangers of extreme ideology. Some counties such as the one I'm presently living in Great Britain have a lot of history -some of it bloody - and it doesn't take a lot of studying to see how that shaped their society.
So you see memories are important for us as people personally as well as societies but need to ensure they're as complete as possible to draw the best knowledge and wisdom from them.