The welfare state is the main reason. It incentivizes women to bear children out of wedlock. It’s a career path for many.
Society also encourages women to divorce, getting cash and prizes for doing so. Government “family court” makes over 60 billion a year off divorce, so they encourage it. And women who are emotional and impulsive (see emotional eaters, and imlulse buyers), who are fed so much propaganda about themselves, buy into it.