Is this a troll thread? On the off chance that it isn't, I'll try to stick to simple answers.

WoW has a lot of depth/content - quests, PvP, raiding, etc. The best thing about it is that it's had years and years to refine itself, a lot of P2P games flop at launch because their bugs and glitches are instantly compared to the current state of other games (which WoW dominates).

You don't just start out in a good Guild, that's called getting carried and unless you have contacts no one wants to raid with the idiot who pulls adds and wipes everyone. You work your way up, if you know your class and have good spacial awareness people WILL recognize it.