In every historical culture you can point to, there were places for men to congregate. From the bath houses of rome, to the barber shop of our parents generation, there were places for men to find those connections and get that emotional, male grounding we all need.
Obviously, the patriarchal structure had abuses associated with it, and was targeted by feminism for a reason. But along with it came a relatively new idea that a man's closest and only confidant should be his wife. I bought into this, and it seriously stunted my development as a man. I think my wife bought into it too, and worked to maintain boundaries around us, which I willingly accepted.
The answer is simple -- all men need some Male-Only space. This man cave thread is a weak virtual representation of that, but for some it may be the closest they get in real life. If that sounds like you, get out and get to work. You will love the results you see in yourself.