Jews in Yemen had to marry early. This situation arose under Islamic rule because an unmarried girl could be taken by the ruling Muslim prince. However it became the custom of all Sefardic Jews to marry young. [I mean ages 12 to 13.] [Not just in Yemen.]

I see this as a very positive thing. To me it seems best for people to marry young and as much as possible this ought to be encouraged.

To me it seems that fighting against nature is  a lost cause. Puberty is when nature says to procreate. To fight that can only lead to disasters and results in the state of marriage nowadays. When do flowers reproduce? Or any species?