I'm also a sucker for a good quest. If it's funny or unique or has some sort of emotional impact, I'm almost guaranteed to love it. After I hit level 90, I spent time going back and finishing all of the quests I didn't do in Pandaria. That's part of the reason I was so happy to see story quests mixed in with the 5.1 dailies. I really like story content, and I hate it when the story content seems to be over and done with.
But here's the thing -- I don't PvP. I used to participate in the days of Tarren Mill vs. Southshore, and later, the weekend-long Alterac Valley marathon games. But I'm just not that skilled at PvP, and I don't really care for it as much as I do grinding rep or doing dailies, or happily raiding PvE content with my guild. I think I enjoy raids because they're more of a mass puzzle that 25 people need to solve simultaneously than the quick-thinking spontaneity of PvP.
There was a question in the Queue a few days back that got me to thinking, though, regarding different types of endgame content. I know there are quite a few people out there that care as little for dailies as I do for PvP. I'm sure there are others who forgo scenarios, or ignore Pet Battles in favor of something else. But there seems to be a group of nameless people out there who are convinced that they must complete all content. I'm not sure why. It's not like you can really "win" World of Warcraft.
So I'm curious, now. Is there content that you feel you're obligated to complete? Is there content you ignore? Do you feel you absolutely must complete everything the game has to offer? If so, why do you feel that way? What makes content feel like something you're obligated to complete, versus simply something extra to do?