"Don't quit this day job"

Heard this topic discussed on NPR's Tell Me More, and was totally intrigued; I read both the original commentary by Karen Sibert, who strongly states the case that MDs should commit fully to their profession, and the rebuttal by Michelle Au.  I see both sides.  Karen is suggesting that women are too cavalier about their medical training and too concerned about their lifestyle comfort - she thinks that society basically subsidizes their training, so they owe us to fully engage once their training has ended, as opposed to working part-time or taking extensive time off to have kids.  Michelle Au notes, rather fairly, that Dr Sibert is applying a double standard.