The Psychology of Constant (Equipment) Change

I respectfully reject your premise. I don' think yours is a condition that requires a pop-psychology diagnosis.

You like gear and you like music- so what? How is this any different than a mechanic buying the latest Snap-on tool when the tool truck comes around? It's not- both are tools that make your job easier and more efficient. Both bring satisfaction. Both have long term value. 

I say "Cheers!  Enjoy! and Congratulations!" 

I swap out gear all the time. I have several pairs of speakers that all sound good, but different. I have two main listening spaces. In my loft, I have vintage gear and three systems running with four pairs of speakers. Using my Wiim Mini streamers and Spotify (say what you will, but I can't get Qubuz to do this) I can easily switch between all three stereos (one is hooked up to my computer via an AudioQuest Dragonfly), which allows me to test different music on each system/speaker pair. Downstairs it's a little more complicated, but still swap out gear there every few months. OCD, lack of impulse control? Dunno... at nearly 59, I don't really need or want to change. :)

I have this problem with watches. I seem to be ok with audio equipment. 

I did the same thing with headphones until I found ones that I really enjoyed and realized all the money I wasted up to then beyerdynamic T1s v1. I’m sure there are better but I’m very satisfied with them and I am done.. with everything else I spend as much as I possibly can afford maybe a little bit over and I know I can’t afford to spend any more money and usually at that point I’m happy with what I get for it .. I still watch all the YouTube reviews and demos on speakers and equipment but I don’t get the urge to go out and spend thousands of dollars needlessly

Try to listen to THE music and not the equipment and that will resolve your disease

Yeah, this hobby is not just about the music or no one would be here.

I swap out gear all the time. I have several pairs of speakers that all sound good, but different.

Exactly. It's about changing things, noticing differences, enjoying differences -- and also hearing the differences through the music. It's a both/and hobby. Accusations that this form of enjoyment is a disease are, themselves, pathological. Even, puritanical.