Where does it go?

So I have this friend who has two children and she has been blessed to be able to stay home with them. Her husband is a teacher. How in god's name do they afford this????? My husband and I both work and make semi-decent money but yet we never have any of it to spend!!! Granted we do have some of that good ole American credit card debt and those beneficial student loans but no more than I would think other Americans have. I obviously have no clue how much debt others have and what bills they pay each month but I just don't get how other people have so much more disposable income than my husband and I?! How does she get to stay home with her kids and still feed them? How do others take trips and go to expensive dinners and shop and go to expensive festivals and concerts, etc, etc, etc! The Shell station down the street is still open. Maybe I should consider a few of those education-funding lottery tickets.....