If I remember right... there was some research or an article I read about this awhile back. The issue is actually the older you get, the more 'stuff' is stored

If I remember right... there was some research or an article I read about this awhile back. The issue is actually the older you get, the more 'stuff' is stored in your memory. And so the search process gets more inefficient - the data really is there, it is just harder or slower to find it. Otherwise, the stories I remember of very old people easily remembering little details of their childhood would not make sense.