As I see it, the "collecting" of wargames, be them physical, and now software, has always been a thing with some. I personally have reduced my purchases and there cost too. Although I still buy PC games, I tend to buy on the cheap end, and yes as some, I don´t know when I´ll play them. I buy them when there on sale and some get played right away, some don´t. Same happens with the boxed versions I buy, on the shelf and will be played sometime, some day.
There is one thing I do find with PC wargames which causes me to lose interest, and that is that most are to "fast" to play, in other words, they become a click fest were I just start moving and clicking counters like if I was playing a checkers game. So in a way it becomes boring, and if you add to that a bad AI, then it has all the numbers to be set aside/deleted from my HDD.
Lucky it´s not always like that, once in awhile you stumble on a good game, or as some of you stated, you simply play older games. I don´t find this happening with boxed wargames, not that all are great but for the most part, I still enjoy the whole ritual of doing research, reading rules and looking up tables. It simply makes me think more, thus I put more attention to my game and gameplay and in return I enjoy myself more.
There´s still good games out there, and some older games are still alot of fun if you get past the graphical eyecandy. I recently bought "Combat Command The Matrix Edition" on sale, and I have been very pleased and surprised with it so far. Nothing fancy but a very well made wargame that dosen´t get much attention around here. It proves that retro looking games can be very good as older games are.
Overall, I think it also has to do with what your up for at a giving time in your life. If we add the lack of inovation in games now days, then it becomes easier to go back to our roots.
I whish you all a joyful holiday season! Good care and be good!
Win10 Pro(x64), i7 8700k @ 4.7Ghz, 32GB ram DDR4, EVGA GTX 1070ti 8GB, M.2 PCIe NVMe (x2) 480GB + 960GB SSD´s, LG 29' Ultrawide 21:9 monitor Logitech G13, G502, TM Warthog HOTAS, CH Pro pedals, TrackIR 5.0, Corsair Void Pro 7.1 USB.