If my dad didn't have his cave, after his retirement, he and mom probably would have divorced after 50 years of marriage. She likes it as much as he does: he travelled a lot and she is used to not having him underfoot!
I am a firm believer in mancaves. But I want a cave too. Not a "family room" or "living room" but a real honest to goodness space of my own, where I can putter and read and beat a punching bag and play games and drink beer.