Here's a lovely idea I heard from an evangelical preacher lately. He said that any mother who works when it isn't financially necessary is "serving the Devil." I think I remember that verse. It's in the book of Full of Crap, maybe chapter 3...
Doctors, nurses, teachers, social workers, public servants, lawyers, or scientists who also happen to be mothers are moonlighting as the minions of Satan. Once they get knocked up, who knows what they might do?! Watch out!