I can see the appeal of having some shithole to drink and belch in, if that's what you do, if your house is one of those plastic on the couches places. (Which, if you're not from New Jersey or Long Island, I can assure you are real.)
Also, the idea of some recreation-based place that isn't based around a giant TV is pretty good. It would be pretty sweet to have a treehouse.
I can't say that I buy into the aesthetic on display, though.