With aging we grow up either to know more about the world or nothing at all. We learn and evolve throughout our lives leaving things we use to do in the past. Some of those things fads into our minds deep in our memories, never to be heard from again. Forgotten after years of development.
Though there are some memories that we hang to that are precious. Memories that remind us the love in our youth of those around us. Even the small thing that was shared with one another can transpire for a lifetime. Rumble learned this one evening alone with Flitter first hoof.