The cliche is that spinster women own cats as a substitute for the children that they never had. This situation is considered to be a sad state of affairs. Primarily because it is obvious that these women have failed with respect to their prime directive. Feminism cannot change this perception; it is innate.
Men have no similar perception. Since men are expendable, it matters not if an one individual reproduces; there are many more where he came from. So it is understood that men should be useful in other ways; and a lifelong bachelor (who worked his entire life) is not considered as a failure like a spinster is.
Why and how do women let this fate befall them? In the modern world, there are a myriad of ways. Commenters undoubtedly can contribute here (please do so). A common reason is taking too long to get off of the cock carousel. Women have so much attention and consequently power in their 20’s that they believe that the fun will never really end. Another reason is that they do not really prepare themselves with respect to what a marriage-minded man might want. Pricing themselves out of the market is another common problem; where women impose nearly impossible demands on what a future husband must be. What really needs to be done is to explain to young women the true situation and how to avoid these pitfalls. But would they listen?