Historically, women started having children around 16-18 years old so that 7 was much easier.
Societally, almost everyone would argue we shouldn't encourage women to have kids that young.
Historically, women started having children around 16-18 years old so that 7 was much easier.
Societally, almost everyone would argue we shouldn't encourage women to have kids that young.
That doesn't seem to be broadly true.
For example, in Tudor England, women generally got married in their early 20s and men on their late 20s. People absolutely knew pregnancy was dangerous for girls who weren't full grown.
It's varied throughout history obviously but if you look at average marriage age now, it's still in low 20s in many places.