Might be an age thing ( I am 61). I no longer feel I need additional gear, or a stack of boards. It's not a question of budget, either.
I am 67 and just as crazy as the first poster. I think it is a matter of society as a whole. Whether it be keyboards, cameras, cars; whatever tickles your fancy, we have become a nation of consumers. The mighty corporations have created this monster and we have been good little students. I do believe that we, as musicians, have been particularly enamored with the plethora of choices available to us to make music. All the buttons, sliders, displays, wiggling sticks, touchscreens. Who would want to sit down at a piano with 88 keys and only one sound. People like Chopin, Liszt, Rachmaninoff, Debussy etc. have all managed to create some pretty nice music with it. I have come to the realization that at this point in life I do what makes me happy. if that is buying a new keyboard and I can afford it, I do it. I do try to maintain a level of playing to justify the purchase of such goodies. I will play about 2 hours a day of classical music, and then play with the toys. Sometimes I may not feel like playing a particular day, so I take a break. Big deal. I do, however, enjoy all the instruments I have, and they are many. My sister and brother-in-law have gone on vacation to Vegas for the last 15 years and have probably spent over $70,000.00 just for their entertainment. At least I can look at my entertainment and use it again and again, whenever I want.
Don't be to hard on yourself. Unless, of course, you are choosing new gear over baby food. That's a whole different problem. Enjoy your music. Be thankful that you have the ability to be creative and the ambition to do something with that creativity. As life goes on music will become a very close companion and a wonderful friend. You are very lucky to have the ability to recognize a beautiful melody when you hear it and the skills to use when you get inspired. Some people have absolutely no connection with music and how beautiful it is, and how much it can enrich their lives.
We are lucky people to have been blessed with the ability to find "sound", interesting, inspiring and a challenge to our intelligence.
End of lesson.
Good luck to all on your music making.