[quote=AN]That’s when women are most fertile. So, scientifically, it’s not young at all. Getting married at 30+ is old, which is why a lot of people 30+ are having a hard time conceiving.[/quote]
Most women are still quite fertile throughout their 20s and into their early 30s. Even 35-39 the monthly fertility rate is still 10%, although the risks of chromosomal defects do rise.
So, “scientifically”, there aren’t major disadvantages to starting a family at 29 compared to 22 unless you really want 4+ children. There’s actually a lot of good evidence that a later start to having kids provides a lot of advantages to those children, although of course correlation is not necessarily causation.