I don't have a perfect memory of my upbringing, but I do know that a 10-year-old on a bike wouldn't have raised any eyebrows back then in my neighborhood. When you were 10 you were supposed to do things
like ride your goddamn bike. I had some freedom to wander around alone, or at least with my brother (2 years older) at age 6-7, and definitely at age 10, free roaming around the neighborhood, on foot or bike, was normal...