May I present, the best pediatric article I have read all year (and maybe longer). Has a paywall, but will include excerpts in comments.

Decline in Independent Activity as a Cause of Decline in Children’s Mental Well-being: Summary of the Evidence jpeds.com/article/S0022-… “Our thesis is that a primary cause of the rise in mental disorders is a decline over decades in opportunities for children and teens to play, roam, and engage in other activities independent of direct oversight and control by adults.”