Yes I wonder why. Teen pregnancy sounds so amazing and inconsequential for individuals and societies alike that teens should just be inoculated as a rite of passage or something...
Don't read me wrong, I'm not stating that the current economic/social pressure is good at producing healthy/happy parents/families, it just doesn't seem good either to turn teenagers into parents. The "sweet spot" probably lies in between, and what you say is very much an appeal to extremes.