I'm a man, and had wonderful experiences with my many (mostly male) roommates, with only occasional hiccups. Saying adult men cannot live together seems pretty excessive.
You are basically dead wrong about adult men not being able to live together. I don’t know where you’re getting your information from, but I am an adult man who has lived most of his adult life with other adult men, and I have fucking loved it. I spent my 20s living with two of my best male friends and those were some of the best years of my life!
Plus, I know you probably don’t mean it this way, but - your phrasing basically invalidates every same-sex partnership. Again, here I have spent the last ten years living with my partner, and we are both of us adult men. Clearly adult men can live together.
I think that maybe you just need to meet better men - your beliefs about gender stink.
This is basically my point. Adult women can live together, adult men cannot.