For every dollar a man makes, most women make about 90 cents...but women who are also mothers working outside their homes average 73 cents. Single mothers who are employed only make about 55-66 cents for every man's dollar. Stay-at-home mothers, of course, earn nothing, and get no social security credit (and little or no respect?) independent of their husbands. If they had a career before having a baby (or two) and "opting out", they are likely to lose ground in it, perhaps irredeemably.
You can probably guess how I feel about these issues. Read Motherhood Discrimination on AlterNet, by Joan Blades and Kristin Rowe-Finkbeiner (the authors of The Motherhood Manifesto) if you're interested. The "Special Privileges for Breeders" phrase came from the mostly inane comments posted on the AlterNet article.
Although I disagreed with several of the points in Mary Riddell's Let's Celebrate. There's Never Been a Better Time for Mothers article (which also provides an interesting British perspective on some of the same issues), I think she's right on the money when she notes that the value of children has been downgraded in modern society. I think she's right when she says that children "recalibrate adults' soured outlook and remake their world", too.