Teaching about the "stale egg syndrome" became very unPC about 30 years ago. A side effect of "sex in the city", many STDs cause sterility in women while only an inconvenience in men.
Most women childless by 35, will remain so, whether clinically barren or unfertilized.
As a bachelor, I am weary of bitter women, angrily blaming men for nature's reality instead of accepting their own choices. The older I get, the more desirable younger women become. Nature ain't fair.