I did yet another one of my bicycle scouting trips to REI in Encinitas on Saturday and was a bit overwhelmed with the hyper parents and little kids in tow attending the climbing wall in the store. The little heads bigger than the bodies seemed uncharmed as beginners to be pealing off the foot supports and hanging in empty space all the while being told by the instructor, "you are doing great!"
Actually, discovered that REI has a super cool "hybrid bike" on sale called the Marin "San Anselmo" - $559, regularly $649
But,

I thought, "what would this lead to"? and how soon would the boys be asking like Johnny Knoxville if they can dive from the roof into the swimmming pool? I recall with clarity the many occasions on which my dad took me trail biking before we knew much about mountain biking. Later I bought a motorcycle of my own and had many harrowing escapes on the pavements of Cali. Would these kids turn into the rock climbers of tomorrow suspended from Half Dome in thunder storms?
Leaving REI we had to dodge several buddhists in flowing yellow robes looking a lot like "Hello Dali" so I felt at least like I was missing something since the 19" frame bike had been a little too small for me.
Oh, probably. A much more reliable thrill is
mountain biking on Mt. Tamalpais and less likely to end in extremely bad news. To "dive off" the top of a mountain col into the abyss is to me the the ultimate thrill sport where the worst that can happen is a little road rash and the need to buy a new helmet for yoursel from REI. Note: with some care I've never fallen on Tam in all my hundreds of demoniac rides.