The fact that most societies used to have such rites suggests to me that our extremely new secular societies may be losing something important as we abandon public and communally marked rites of passage. A human child doesn’t morph into a culturally functional adult solely through biological maturation. Children benefit from role models (for cultural learning), challenges (to stimulate antifragility), public recognition of each new status (to change their social identity), and mentors who are not their parents as they mature into competent, flourishing adults.