Once the kids are old enough to go to school what excuse does a SAHM have for continuing to stay at home?

Note: Since the kids are at school she now has no one to take care of at home. So, at this point she doesn't really have any more excuses for continuing to stay at home doing nothing but watching TV and surfing the Internet. At this point, surely any self-respecting person would go back to work? Or are some people so lazy that they have no shame? Will they swallow their self-respect and continue to stay at home doing nothing? Instead of earning their own keep, will they just leech off of the hard work of their husbands or ex-husbands ,as the case may be? While their husbands/ex-husbands are working themselves to the bone, what will they be doing the hours the kids are at school? Shopping? Watching TV? Surfing the Internet? Why don't they make themselves useful instead? Have they no shame? Does their laziness no know bounds?