>>280891798
>We're talking about teenage girls who have hit puberty.
Still mentally undeveloped and not prepared for complex relationships.
>Also, reproduction and "mental maturity" are two separate issues entirely.
They are, but we just can't throw them off, you wouldn't let a teenager take crucial economic decisions. That's why gambling is forbidden for the underage.
>we're talking about normal human biology
Our whole civilization has been built on ignoring normal human biology, anon. Is that or being a victim of Polio as nature intended, stop acting as an edgy kid.
>and everyone can't wrap their heads around why birth are plummeting worldwide.
That's an economic issue anon, people's salaries can't pay shit nowadays, even the birth rates among the poor are going down.

>>280891871
As I said, that's just one of many causes for the law forbidding kids from dating older people anon. Either way, pregnancy is a risk no matter the age anon. At 14, most of us were still playing kid games or some videogame, letting a girl have a kid at that age is insane and uncivilized to our recent standards.