If I told my wife "all it does is sit on your finger" she would correctly argue that "all your guns, except one, sit in the safe all the time." You can't really argue with that logic. We've been together for 36 happy years. If we have the money and she wants something, she gets it. Vice/versa. I'm kinda digging that arrangement.
Not been married as long as you but we have the same concept. Most of the time l have to force my wife to buy things she wants. It's even hard to get her to buy things that she needs.