Answer:
This means that it doesn't matter how old you are and if you have lived longer than someone else. It is simply how much and what experiences you have had and what you got out of it. Even if you are younger then someone else, you could still have had more experiences and interactions that make your experiences richer. A successful 30 year old that has lived life to the fullest and met a lot of people and enjoyed many different things would have richer experiences than an 80 year old who lived their entire lives alone and in their rooms.
- I wrote this btw