Probably because they haven't had sex yet. Teens in America are having sex young all the time. There is a show 16 and Pregnant that airs here and all the girls aren't all 16, some are 14/15 others 17/18. Nothing new
I think England's youngest pregnancy was a 12 year old girl. That's too young though.
I had a Wilbury-esque post lined up, but I know the importance of self-respect.
Well that's at least two of us then. (Y)