The point of a man-cave (at least for me) is that the family room is for the entire family. That means that if a guy wants to watch a movie, it has to be suitable for the family to view. The man-cave, then, is for the man to do whatever he wants (within reasonable limits). So he can feel free to invite some buddies over and watch a *bleep* action flick without offending the rest of the family. Or they can scream at the TV during a football game without distracting others. It isn't that I'd rather stay in a man-cave whenever I'm home, but that I'd sometimes would like to do something that the others in the house may not be as enthused about or should not be exposed to.