There is both empirical and theoretical evidence from evolutionary psychology. A man can have more offspring by being promiscuous, while a woman cannot.
Now I think that I have been wrong.
Surveys now say that boys are more interested in marriage and family than girls.
Studies of online dating sites show that women are much more fixated on physical appearance than men. Women only swipe right on the top 1% of men, based on a photo.
Promiscuity now appears to be a lot more common in women than men. There are lots of 25yo men who have never had sexual relations, while the typical 25yo woman has had 10+ sex partners.
Marriage norms have relaxed a lot since the 1950s in the USA. I would have thought that women would be the complainers about this trend, as their instincts would be to stay married to a husband even if he is unfaithful.
I now believe female instincts are not towards monogamous marriage at all.
Given the choice, many women prefer to be one of several mistresses to an alpha man, than to have a husband of her own.
Every girl's favorite fairy tale is Cinderella. Their favorite movies are about slutty girls and prostitutes. The poor girl throws herself at the alpha man, and no one else is good enough for her. So lots of girls spend their 20s chasing and seducing alpha men, and postponing marriage.
An example in the news is the Call Her Daddy host, whose wildly popular podcast celebrated female promiscuity. Now that she is 32yo, she has married a Hollywood movie producer and is expecting a child. I listened to one of her episodes once, where she and a guest discussed playing for a girls soccer team. It gave the impression that the main topic of conversation in a girls locker room is discussing their latest venereal diseases.
The dating apps are all going bankrupt, because women no longer use them to find long-term mates. The women mainly seek flings with alpha men.
Popular advice for women is to have loose morals and adultery fantasies:
Well, you’re not alone. In an article in New York magazine headlined “The Secret to a Great Marriage? Crushes on Other People” the female writer makes the argument that fancying other people is not just inevitable but healthy for a relationship.Many wealthy countries now have low fertility rates, and the leading explanation is that middle-class women do not want to have kids. It is not that they cannot afford kids, as the lower income groups have kids at higher rates.
I am not sure if feminism is the cause or the effect. Not wanting kids is correlated with feminist views.


