Has this happened to you? How can it be stopped?

@2psyop I don’t see a problem here. You just need to use the 1:1 spending method with your wife. For each dollar you spend on "irrational" purchases for you, you graciously allow her to "invest" the same amount in "irrational" purchases for her. Just don’t keep score. You may not like what you find out.

As for myself, I’m a retired audio dealer who still spends one day a week servicing vintage audio equipment. The goal: "Prevent good equipment from going into the dumpster." Once in a while, I come across a piece of abandoned equipment. I’ll repair and hang on to what I consider "a good example of vintage audio gear" for my grandkids. The problem is, of course, I now have more vintage gear than grandkids.  I can also tell you that I have more deep regrets after selling off a piece of gear that I should have kept in my collection, than purchasing a few more items that I shouldn't have.

I’m also a car guy and have 9 cars. Hifi gear is much easier (and, cheaper) to operate, maintain, insure and store than old cars. My user ID: "waytoomuchstuff" has more than audio implications

Thanks for the post. Good stuff!

It's difficult to impossible to support an emotional argument with a pragmatic approach.  "Vintage" to some is "old" to others.  While "old" is factually correct, it falls short in defining all the elements of our attachment to "vintage" gear.

Owning competent examples from the time period when we discovered the magic of high(er) quality sound in our lives is very rewarding to some.  These were "the best of the best" if the equipment available at the time.  Well, within our price range anyway.  

One contributor expressed his attachment to his vintage car.  Yes,, I  too have a "feel good" moment when I pull the car cover off one of my sixties "hot rods".  Even though my daily driver is quicker, faster, handles better, and, of course, much safer. 

If it makes you smile when the needle drops or the cassette tape spins -- mission accomplished.