Most hobbies/interests/avocations involve the acquisition of knowledge, skills, materials, parts, and the interaction with others in the community who share these with you. You have to admit something such as stamp collecting has changed immensely during the last 50 years because of the internet.
Factors that affect the waxing and waning of interest include well the novelty, the quest for knowledge, maintenance, (for many of my hobbies it's been the "hunt" or the search of new pieces or examples which represent my chosen interest), free time, and changing life roles and responsibilities.
I'll give an example of one of my hobbies- computer rig building and then overclocking. I spent a couple years doing this because I thought it was absolutely fascinating. I reached what you may call my 'endgame.' This is a consistent, popular, ASUS board (Sandy Bridge for those still green) chosen for quality and because most potential problems and solutions were well documentated; and an Intel 2500K. I had this rig stable running at 5.2 GH and crashing about twice a month. Some would argue that is not stable but that is not the point here. Since I don't game I never had a reason to upgrade my gear and I've had the same rig for the last 6 or 7 years. I could learn about the newest generations and dump 1600 bucks on all new stuff and have some fun, but I would see little difference in performance for my needs. It is true and I don't game and the most resource draining games do lag on my system on here, but it's of no concern to me. It seems the OP KAVIK has also reached his chosen 'endgame' as he doesn't wanna dump more resources and is very happy with his current build. Also in light of other events in his life and his late friend, this seems trivial.
I'm one the weirdos or minority who has found his favorite switch to be unmodified Cherry MX Browns. I do go on GH almost daily, but it's mostly to read about newbies experiences and give a little guidance with my limited knowledge base. I will say that during the last 6-12 months there has been an enormous amount of new switches or modifications of older designs- some mainstream and some confined to the underground community. This new invention of the drop in keyboard switches has rekindled my interests again at new switch designs and I would like to again experiment with new layouts, brands, companies, designs, and well just about everything. But I do need to take some time and money to advance my career, so the keyboard thing has to take a backseat.
I don't know what the "Moon" keyboard is (shows what I know next the the real enthusiasts) but Kovak, you are at a time in the hobby where there is so much to try that I can almost guarantee that with a little research and experimentation (half the fun) you can find something which will exceed the expectation cap you have placed.