Because people back then tended to die by age 30. And, of course, getting married at 13 is somewhat different from driving into a Burger King parking lot so some 13-year-old girls you've never even met can watch you masturbate.
muggs: Why are you defending sexual deviants?
I'm attacking the hysterical partisan witch hunt mentality.
My daughter is 18 years old, and if I caught you or any other old horny bastard around her, the LE won't be coming for them, it will be for me. Now put that in your partisanship and smoke it.
And thus a legal adult, and you could be shot for the assault.