His resources are taken by the state in the form of taxes and used to support women that he receives nothing from and bastard kids that aren't his.

We now compete not just with each other but with the System itself for women. The State has overthrown men as Husband and Father. Women can gain access to the average man's resources without even having to interact with him anymore, via the welfare state. This leaves them free to get pumped and dumped by Chad and even have his bastards without fear of being destitute, which is what would have happened 60-70 years ago if she was so irresponsible with her sex.