[microcolonel]

That's not for anyone else to decide.

If I make the decision to take up painting; my economic worth will decrease. That's personal.

I, as somebody who aspires to be a father some day, will try to make it worthwhile for mom; but ultimately her lifetime financial earnings will be less with kids, and that's something she will decide.

As far as occupations which are "underpaid", that's up to the employees. Nurses are paid what they value their work at, if they don't want to work for that money, they don't have to. Because nurses don't mind working for what they're currently paid, they are paid that much. If they were paid less, fewer of them would do the work.

[delan]

That a person would continue to work for a given rate does not imply that they don’t mind working for that rate. There are many reasons why one might continue. They may not be trained in another occupation. They may not have the money to choose to stop working in an effort to make a statement about their rate. They may even want to continue working despite their objections about how much they’re being paid.