Except these men taking on more traditionally female roles are not viewed as sexually attractive to women -- especially compared to more masculine men. What the OP wrote is basically the thesis of the Red Pill community. Leaving aside the sometimes toxic content, RPers really have pulled back the curtain on "what women want". The sheer amount of data collected via Internet dating in the last twenty years has provided more insight than ever. What they want in their professional lives does not always match what they want/need in their personal lives. Please, please, please: Do not read this post as blaming women. People are fully entitled to have their personal preferences when choosing whom to date -- be they reasonable or not. I am looking at the outcomes, less the cause or intent. The gender revolution that has allowed many more women to have more economically productive careers has a strange counterpoint: Economies can change (much) faster than culture. So yes, women have climbed the corporate ladder very quickly in the last 30 years (lots of change), but their dating preferences have changed much slower. You can see this in the number of high performing, professional women that struggle to find people they want to date.

> Women do want careers as good as those of men

Why would anyone choose the role of a provider if they aren't under a huge biological pressure to be one? All it does is offer an alternative way to slightly increase dating prospects.

My point is it social pressure, not biological. It is a product of cultural expectations.