I remember when teen pregnancy was considered bad and a sign of a decaying morality across the country.

before that it was commonplace though. I'm 61, my grandmother started having her kids at 16, she had 8, one of them my mother, the youngest of her kids. Many of her friends were similarly 15-19 having thier first kid. My mother was 19 with me, I was born when she turned 20. She had 3 kids, i have none, my sister none and my brother 2, so family dynamics have changed.

This is Australia though, you can read books of some of the early convict ships coming over and they arrived with all the 13-16yr old girls pregnant, or having had their kid on board and being married etc

You can see some of the effect in The Philippines, pregnant teen mothers are everywhere. Religious indoctrination in regards anti contraception doesn't stop teens fucking (and this in a nation with no divorce)