From my own personal experiences, it seems like many people I know who play WoW, or have played WoW just say the game is a hamster wheelhouse. In other words, they say that Blizzard keeps churning out content that is the "same as before." Also it seems like the people in the guild only raid because there is "nothing else to do to keep them busy."
Nothing else to do to keep them busy? Yet this expansion has arguably more to do than any other expansion start with the exception of TBC. People call it burn out.
Content is now less varied, and comes out slower than before, and they call major content patches (5.1) content. Not much content there if you ask me.
Also another piece of evidence: Have you seen the server status lately when looking at sever lists? Most of the full servers are now medium to high, all the high servers are now low or medium, and medium servers are now low to non existant pops at peak times.
Whats the deal? Is enthusiasm for the game in general just dwindling?