What you're suggesting fits in with the trend of how RooshVForum began and its current transformation.By the time many of them felt ready by 30. Most of their eggs are gone.
So there is definitely a hit to family size and mutation load. That risk multiplies every generation when repeated. And even if their children or grandchildren marry younger the damage is done.
Likewise as the cultural drift continues. This trend will increase and get even worse.
The victory will increasingly belong to women who get going on husband hunting straight out of high school sans college. Who are home schooled and resistant to the the programming.
Because I see less Men being tolerant of women who already gave their best years to other Men before them.
Expect more of this:
A lot of people, both men and women, are approaching 40 still single. While everyone has a different story of how they got there, women seem to be arriving at this juncture without humility while insisting on high (or immature) standards. [attachment=42671] [attachment=42672]...www.rooshvforum.com
Time will tell, of course, how the culture develops in the future, in light of the trends you are suggesting.