Living on your own

Adolescent is the gap between sexual and economical maturity. In the 1820's girls reached sexual maturity at 16 and boys at 18. In the 1820's girls and boys were economically mature at 18-20. Today girls are sexually mature at the earliest 8 and boy at 12. Today youth are economically mature at 26-28. Why is this so? It seems like in the 1820's life was perfect, once you were sexually mature you were economically mature. Youth are becoming to mature too fast. This means were need to teach our children at a younger age the ways of life.