I read about this phenomenon all the time; YouTube is chock-full of videos about it. Basically, it boils down to the fact that young women are fed the feminist screed that being a wife and mother is degrading, and that they must compete with men on equal terms in the business world, because to do otherwise is to set themselves up for indentured servitude.
Which many, if not most, of them do. Men show an interest in women, maybe hoping to establish a home and a family, and women rebuff them, putting off such things "until their careers are established". Right up until the time reach about the age of thirty. After that, the ticking of the biological clock becomes louder every year, and suddenly they look around and realize that all of the men who were so available ten to fifteen years before are either married to non-career women, or have been broken by the toxic Western relationship culture, and have given up---dropped out of even trying to find a life companion, and have chosen to remain single for life.
A good many of these women, having realized that they've "hit the wall", with regards to attractive qualities, end up sitting in their cars outside singles clubs, posting TikTok videos in which they sob that they can't find any men who are interested in them. The guys that they rejected years before didn't wait for them---they moved on; and the ones who might still be available to them want nothing to do with them. It turns out that men are not attracted to hard, pushy businesswomen who have spent so many years bulling their way through office committee meetings that they have become, for all intents and purposes, men with breasts.
So, the men go fishing with their buddies, or play video games, or build birdhouses in their garages, and walk on the opposite side of the street or take the stairs instead of walking close to, or riding in an elevator with, a woman and thus avoid proximity to a potentially dangerous female who might view them as a "predator" or a "creep". And the women sit in their empty luxury apartments, drinking mint tea and crying from loneliness as they pet their cats---no husband, no children, no possibility of grandchildren, and nothing stretching ahead for the rest of their lives but sterile solitude and company awards for "Saleswoman of the Quarter".
And it's all due to feminism. Gloria Steinem and her harpy compatriots sold a worthless bill of goods to at least three generations of young American women, who bought it wholeheartedly, but now, in their 40s, realize that what they got in exchange is essentially worthless. The women are not happy, the men are not happy, and it may take centuries for the pendulum to swing back towards sane gender roles. And in the meantime, half or more of all new marriages implode, men withdraw from a societal structure that they get no benefit out of being involved in, and birthrates continue to plummet, world-wide. We are seeing the destruction of the nuclear family right before our eyes---and no civilization in human history has survived once the family unit, the basic foundation stone of any civilization, has been destroyed. It's sad.