I started playing in July and stopped playing after my two 80s hit 85, which was like early January or something. For the last month, I just lost interest. I like that they made the dungeons harder, they added new quests/removed some of the old ones, and changed the entire world, but I just don’t feel like playing dungeons anymore. I kept finding them annoying because they were so tough, but then again, it was still new to everyone, so of course we were wiping a lot. I also didn’t do anything with my gear, though. No gems, enchants — hell, I’m still carrying items from questing cuz I wasn’t getting a whole lot of good drops for a priest (guess I’d have to get *edited* crafted).
I don’t do raids (see the part where I mention that my gear isn’t great). If I went back to playing, I’d probably like to start a new toon just so I could play the new quests or level my professions on my 85s.
Before I lost interest in WoW, though, the thing that I liked the most was leveling my toon. When I hit 80, I got kinda bored, too, now that I think about it. Next was leveling my professions, lol.