I think we have become accustom to parents being in their 30s when they start a family, so when someone in their 20s starts a family we naturally compare that age to what we are used to. So 20s seems young to many. Biologically it is a much better age to have a baby
AI Overview
Biologically, the best age to reproduce is generally between the late teens and late 20s or early 30s. Fertility peaks in the early to mid-20s, with high egg quality and quantity, reducing risks of miscarriage and genetic abnormalities. While optimal fertility lasts until roughly age 30, a sharp decline in fertility and increased risks often begin after age 35.