But hey, every house should wear a hat.
Insulating your attic is supposed to be a project that pays for itself within the first winter you do it. After spending my off day crawling around on my knees in the dusty, glass filled, coal dust air attic of mine I have full confidence that the benefits will be worth the effort. After all, when you wear a hat, the hat helps trap the heat in your body. The same is supposed to apply to your feet but I don't see how that works with a house.