Well, I play WoW ... at least I was until my chars hit 80 and I had nothing to do. (Sorry, just not into the PvP/"raiding for uber-epic-supraTier" gear scene.) The weird thing is I play WoW 90% of the time as a single player game, basically. I'm not in a guild. I don't raid. I have no interest in the PvP. I don't do the arenas. I do every instance once just for the experience of seeing it, but that's about it. I'm almost always going to the auction house to buy stuff, not sell. When I craft, I'm basically doing it to make stuff my other chars need.
Truth is I generally don't like single-char RPGs esp. "action" RPGs ... it's why I avoided the Witcher and never really got into Oblivion et al. And Fallout 3 only lets you take Dogmeat and an NPC with you ... meh. However, ironically, I essentially play WoW mostly as a single player RPG, I like trying out the different class/race combos, and yes I'm one of those weirdos who plays both Alliance & Horde chars. on the same server, just because I like trying out everything.
It's not a bad game. It's the only MMO I've ever played, friends dragged me into trying it, and joining a guild that ceased to exist years ago. Never got into Everquest, D & D Online, LOTR Online, Age of Conan, Warhammer, or any of those MMOs. But from what I understand every bloody MMO is full of the same thing: annoying little punks constantly spamming you with challenges to duel them, gold farmers, PvP-maniac jerks who will not leave you alone no matter how much you show lack of interest, constant guild/buy gold/chuck norris jokes etc. spam, and people who when you run instances with them either loot ninja, don't know what they're doing, get you wiped because they don't seem to get what 'aggro' is, or can't play their chars properly (hint guys: healers are supposed to heal, tanks grab aggro, and buffers buff ...). *sigh*
Here's the deal folks: Bioware is the ONLY one right now doing RPGs that are not MMOs, that are single player, that are story-based and driven NOT sandbox, and allow you to use a party of chars/companions. They've got no ****ing competition. Bethesda isn't making those types of RPGs anymore.
Personally, I just can't get into the action RPGs, especially. Dungeon Siege was OK because it let you have a party of chars. and I was rather fond of the party mule. But lord oh lord does it get monotonous. Your mages just blast blast blast blast blast, your archers just shoot shoot shoot shoot shoot, your warriors just bash bash bash bash bash, and you as the player are just sitting there mashing the two potion buttons most of the time. I tried Diablo but man oh man I just don't like games where it seems the goal is to keep clicking something over and over again until it dies. Feh on the action RPGs. They've diluted the genre, lobotomized it.