During her youth when a woman's most fertile and fit to birth children, she also tends to get the most sympathy, favors, support, car, and all of that. It's frankly impossible to mind that if she's making an early decision to make a drastic lifestyle change accompanied by lots of sacrifice and labor that benefits her child and her society.

Under feminism, women spend that time doing nothing useful. Rather than starting families, setting up a kid's life, or any of that she's just going to go out partying and spending her youthfulness selfishly and unproductively. She won't have kids until it's unhealthy to do so, her career will be underwhelming because she wants time off to party and she quite frankly doesn't need prestige to get social status.

RPW careers are fundamentally different than the feminist's because the RPW still has those ideals of family and motherhood in mind. Working is a response to a changing economy and not to the things which motivate a feminist.