It's not just that, but we became a culture where your neighbors will call the police if you let your kids walk around the block alone.

The Baby Boomers criminalized and curtailed almost all the risk that made childhood and teenage years adventerous. I got to watch things getting systematically removed as I grew up. My brother is a few years older than me and we went through the same junior high. His experience including shop class, wrestling in gym, and dissecting a frog. Mine didn't.