I've not read all the posts, just the first couple of pages.
Ok so you are saying that is it 'better' to have a baby in your early 20s as it's the best time biologically etc etc.
A woman 'chooses' to have a baby over develping a career etc.
However, the crucial factor missing is a (willing) MAN. When I was 23 none of my male friends were getting married or contemplating babies, it was the last thing on their minds...and mine & my female friend's too!
Partly why women have children later is purely from not meeting the right man til later, or women in their 20s desperate to get married/start a family are with a man of the same age who runs a mile at the mere suggestion.
Just my musings, but I think that a woman aged 25 is 'probably' better off with a man 5 or 10 years older as he is much more likely to be ready & willing to take the step towards marriage & kids.
A man at 25 is much less likely to be at that point, in this day and age anyway.
Yes this may be a sweeping statement but I believe that there are really strong elements of truth that cannot be denied.
Last point- newspaper articles, good old Daily Bigot being a prime example, berate women but running stories about selfish career women who have left up too late to have a baby, struggling to conceive, needing IVF- as if they brought all this on themselves and 'chose' not to have a baby in their early 20s.
Nobody every addresses the male side of things, that maybe the woman wasted her time with commitment-phobes who were never going to marry them/have kids with them.
I think this is a really important aspect which rarely gets mentioned- it's always as if the woman 'chooses' to wait til she is 38 to try and have a baby, as if there are no other factors involved apart from her own selfishness.