By the way, marriages were good enough for a 12 year old when people living to the age of 50 was old.
Thus your thesis is : The longer we live, the slower we mature. Prove that. Demonstrate it with facts.
Do you mean mentally, or culturally or emotionally?
Are you asserting there were MORE situations for mental, cultural or emotional growth 1500 years ago - despite being in smaller, rural, less populated environments with no ready idea exchange?
(Really. You're making this way too easy...)
What does making a living for yourself have to do with the age of consent. Unless you're entertaining prostitution as a career choice? Which is fine by me.....