I just google maps'd my home and elementary schools, and my other home and middle schools.
I would occasionally ride my bike 5 miles to 4-6th grade (on a bike path next to the highway). By 7th and 8th grade that bike ride was 7.3 miles. Through a town.
Now I didn't do it every day, I had parents for rides in elementary, and school buses in middle school, it was common for once a week or so I would ride my bike. I liked the freedom of scheduling it gave me. I could hang out at a friends house for an hour or so or just play. I was a latchkey kid by those years.
The telling thing is that that wasn't unusual. a large percentage of kids at both schools would do similar things. The kids whose parents wouldn't let them due to road issues (there are roads in Anchorage that smart adults don't ride bikes on) were jealous of our freedom.
Like geronimotwo, I don't think predators are more common now then they were 25-30 years ago. I think we (as a society) have just trained ourselves and our children to think of them as helpless. it's becoming not unusual for a child to need their parents support into their mid 20's. If a 25 YO isn't ready to face the world, obviously a 12 YO is helpless.
Without returning to marrying our daughters off at the first onset of puberty it would be worth remembering that for the most of human history, right up into the 20th century 10-14 YO could and did hold jobs, make life decisions and in some cases march to war just fine. 15-16 was fine to start a family and be a [young] adult. Kids are not near as innocent and fragile as their parents would like to think.
Denial, as they say, ain't just a river in Egypt.
*caveat: We still don't know where this happened, or how old the kid was. The judge could still be right. Dad might have marched a 7YO through Little Beirut for all we know.