You must buy very few games...
I bought a lot of games over the past 40+ years, but don't buy more than 1-3 in any given year. My game library includes a lot of strategy games, open world RPGs, and city/empire builders, mostly things with near-infinite replay value. Examples I own:
Morrowind
Oblivion
X3:Terran Conflict
Hearts of Iron III
Victoria 2
Mount & Blade (and Warband)
Europa Universalis III
Close Combat 1-4
Chariots of War
Sparta
Every one of those games is suitable for replay with a different character, culture, or course of action, allowing you to play it over and over and get a different experience each time. I simply have no interest in most linear "once and done" games, where your choices don't make fundamental changes in the course of the game. M&B (and Warband) allow you to play your character in entirely different ways from the previous run, to choose a different faction to join (or remain independent), and to affect the course of events in ways that aren't pre-defined and the same every game. Without player agency, there's no point, in my opinion. Problem is, while Bannerlord allows a lot of freedom to choose, most of those choices currently don't do anything meaningful, so it gets tedious and there's a lot less reason to repeat the experience.
The later posts about the changing game market are an understatement. In the past, computer games were a niche market for the few technically inclined individuals who were willing and able to operate one of those complex and daunting computers, and most of them highly detail-oriented and/or compulsive micromanagers. As computers became mainstream and operating systems allowed easy point-and-click operation that even children could understand and do, simpler and less confusing games were latched onto by the new users, and it became profitable to sell simpler games or simplified versions of previous games. In essence, the techies who started the trend and the more detail-oriented new users were left behind by the industry. They're still around, and still buying games, but very little is being made for them anymore. Rather than having a major share of that little "cupcake" of a niche market, everyone wants to compete with the hundreds of other developers for a sliver of that full gaming market pie.