Maybe it's a bit strange, but my wife looks at my guns as 'objects of art'. Her approval of what I buy is related to how it looks.
We've been married 33 years and she was a 20-year-old artist when I met her who has made a life of art and design. Me, I'm an engineer.
She makes her decision my guns dependant on looks. She likes the classic looks of the 'old army', the 'hand ejector', the 1911, and the Luger. She hates the looks of the Walther P series, and the Glocks. She likes lever guns and bolt action rifles (except the Steyr Scout), but doesn't think much of automatic rifles (except for the old style BAR). To her, the Garand comes in behind the M1 Carbine.
She shoots rarely, but will go shopping with me and drool over an old Colt single action. Me, I want to shoot them...she wants to see how they look on the wall.