Haha, I'm late to the discussion, so maybe I'm missing important context. But I think maybe the core reason for the setting may be that the author, along with the large amount of fans who play this game, is really aroused by male power fantasies.
But yeah, I'm sure we all have a good enough of an inherent understanding of how primitive societies work, which I'm sure plays a role in engrossing us even further because it's very believable for the most part. I mean, maybe not the bad ass lone stalker alpha male hero that every woman wants to fuck, but that's a given in this kind of game
![Big grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
. Well, maybe it works actually if you picture it kind of like this universe's version of a Witcher and the cultural significance that comes from it.