We have an agreement, she has the upstairs and I the man cave on one side of the basement and my reloading den the other side of the basement, both are separated by the stairs.
She spends just about all her free time on social media yapping with her pals and our daughter in laws and I and the hounds stay down here(she even bores the dogs to death). Man cave has fridge, PC, gun cleaning table, wood stove and I even have a bed down here if she starts snoring like an old sow.
When our three lads got married she had one piece of advice for their brides. "If you want your marriage to last then make sure they have two things, a man cave and a workshop for them to fix stuff".