Why do people bring all of their kids out shopping the day after Christmas?

We all know how busy the stores are the day after Christmas with sales, returns, etc.  So why do parents add to the confusion and commotion by bringing their children? Most people are off work that day, so instead of bringing your children and making all of the other customers angry, they should stay home with Dad! Come on people, get it right! The world does not revolve around you and your little rugrats!