When should a parent decide, “My child is old enough to live completely free of my influence”?
By the way, “Never!” is not a good answer.
Children on their way to adulthood have always struggled for independence against their parents. What’s changed is how parents view childhood between the ages of 13 and 20.
The concept of “adolescence” has only been around for 100 years or so. The terms “adolescent” and “teenager” were first used around 1941.