IME, most of the tedium comes from the "inventory management with a crappy UI and arbitrary limitations" minigame (really "maxigame"). It is also related to the

IME, most of the tedium comes from the "inventory management with a crappy UI and arbitrary limitations" minigame (really "maxigame"). It is also related to the treadmill aspect of progression being a simple repetition - craft X stuff so you can craft the better Y stuff. It bores me quickly, but I know there are people who get off on this aspect. Conversely, the RPG treadmill of kill X mobs to get stuff that will allow you to kill Y mobs can keep my interest for a long time and I get enough enjoyment to suffer through the obnoxious RPG inventory management pain.