I do not care for the term, “man cave”. When I was a lad, the man’s room in the house was his den. Women weren’t explicitly denied access, it didn’t have to labeled “man” the way a public restroom might, any more than a bedroom vanity has to be labeled “woman”. In both cases, the purpose is obvious.
Yeah, I always thought the term “man cave” was created in order to denigrate men and an attempt by feminist man-haters to try and put men in their place.