I have no idea what it would be like not to have space or a wife that would limit it. But, I did get married later in life and had a small house packed with guy stuff that my to be wife thought was great other than me and the dog kept it about 55 degrees in the winter. It took a while to track her down, but well worth the time and effort.
I have my loading, arrow building, and gun room in half the little basement with a nice spot on one wall yet for something. The walkout family rooms has all wall space for my mounts and wildlife stuff with a couple small spaces left. The wife did get a little wall strip between two doors for a little rack of girl stuff. I have a nice spot reserved in the living room ready to go for something special, nice space over the main stair and then there is that nice spot over our bed. Then there is the little sun room with two great wall spots and 10' ceiling yet to get anything stuffed on the walls. My problem is I don't have enough stuff to put on the walls so feel free to ship me some of your lonely neglected critters so they can be properly displayed and appreciated. :D
Oh and then there is the pole barn, shop, indoor bow range, hunting gear headquarters. I do screw all my scrub racks on the walls out there. strictly off limits to any general household or kids stuff.
I am all of a sudden feeling very blessed.