Our memories are not great. As we go through life, there are some experiences we remember, but many experiences we forget.
If there is not a current need, or the experience does not fit with what you are currently learning, the memory has a tendency to be lost.
This is why it is important to find ways of documenting the experiences so that they can be relived at a future time. Being able to relive an experience will allow you to continually learn and grow from the experience.
Constantly learning will increase your fulfillment and meaning in your life.
Experiences are assets that have lessons you can learn. Your experiences are unique to you, no one else has the same experience.
This is why personal books of knowledge (PBOK) are so important. Your PBOK records your experiences and gives you hooks to find those experiences at a future time.