Like myself, a lot of players have been around since vanilla, and have been raiding for almost 8 years now. Despite the different mechanics of fights, the way the new scenery looks, the way new talents have been implemented..... the whole thing has become pretty stale.
If we are still playing the game, we are PvP'ing, because its funner, more stimulating, and takes so much more skill(then doing the same fights over, and over, and over, and over again. Yes, despite heroics, and different raid comps.)
Straight up, its become a game of
who is highest on recount
Screw that. Gimme PvP all day because it actually stimulates the brain