Oh, and in case you think this is just an issue for women. There is a man who has started a thread saying he is thinking of abandoning his PhD. His reasoning is that he would like to start a family in the next few years and wants to be a stay at home dad.
And here comes the conditioning:
He understands, or gathers, that when a couple decide to have children, it is often the woman who will choose to be the main caregiver, because the man is usually the better earner. (Many threads on mumsnet bear this out. People make this decision often based on financial reasons).
His reasoning is that he doesn't want to be in a position, where his wife feels obligated to be the main caregiver, due to him out earning her. He has this (skewed) idea, that if he reduces his earning potential, he increases his chance of being a stay-at-home dad. By not becoming the default breadwinner, based on his salary.
So a man is thinking of jacking in his degree, reducing his potential, in order to lower himself to the level of a woman, so they can make choices over who stays at home, from a level playing field.
And although I think most people would think he was daft, you can easily see why he thinks this. Being a stay at home dad as a decision is so outside the box, he is attempting to limit himself in order to achieve it.