I've never understood this concept "man cave". It always seemed cuckolded from the beginning to me. A special part of the house where you are allowed to have your "manly" things and obsessions surrounding you? I have a part of my house where I am allowed to have manly things. It's called the entire house because I own the fucking place. Trying to call it a "cave" as in men's preferred state is wallowing in a natural shelter of rocks doing tribal pre-historic things when men are the ones who invented and built every major convenience of modern life. The best term would be "man home" or "man house" but then again because I'm not a faggot, I have a wife who is living here so it isn't exclusively a dwelling for men, so I just call it a "home" or "house". Insane concept, I know.
Now is there a part of the home where I have more of my things concentrated? Yes. My home office where I work when I'm not at work, or generally participate in my hobbies. It contains my computer/monitors, gun cabinet, guitars, and amplifier. It is also modestly decorated with a few paintings, photos, and mementos from relatives or ancestors to which I ascribe meaning or value. If you don't have a place like this in your home you're not human. If you need to fill it with tacky nonsense and call it your "man cave" you're a cuckold and a faggot.