I was maybe ten when I decided I wanted to avoid growing up as much as possible. That was years before I even knew distance running was a thing. Once I discovered it I figured out that as I got too old to have people to play pick up baseball and basketball with I could still "play" a sport everyday by going for a run. Running became a big part of how to avoid being a typical adult and the thing that mattered most to me aside from my wife and kids. There were probably other things I could have done to avoid growing up but running worked well for me and I suspect for many others.