I've been playing WoW for like five months and I'm not past 60 yet. Most of my time has been spent playing PvP.
My friends tell me that I'm retarded since I could have a level 70 decked in raid epics or possibly even S2/S3 PvP epics. But what do I care? It's not the destination, it's the journey.
Just play whatever you want however you want. And I should go back to /v/ and fail more.