Most can't and say so but won't give up the house. Then when you see them driving a Yukon or Suburban for their two kids it becomes obvious that the budget is so out of whack that a $5 latte isn't going to change anything. By the time they have money not allocated for mortgage, $200 cable, $200 cell phone, $1k car payments, $500 student loans, $500 kids activities the latte is nothing.
I will say I stay at home but I don't get parents who stay at home full time and send their kid to daycare/preschool 5 days a week almost full time? Why are they staying at home? But I guess I can see it's a choice, but a very expensive choice I would argue. And another thing that makes the budget unable to balance versus the $5 latte.