I can't come up with any valid reasons to hate it. I love the theme, I liked the raid bosses this tier, I like most of the factions and quests and story. And the ongoing plot with Anduin and Wrathion is just great. The Dungeons...the look, the gear and little things like hidden goodies and nuggets of info around Pandaria. I can't hate it.
The only enemy I have is my wavering attention. And it's just part of my own nature. I might be moving off the WoW scene for a little while just to taste the air around the other swamps.
Accepting that your interests have just gone on a wander is something people find hard to do sometimes, it's easier just to lash out at something familiar and go: "THIS ISN'T LIKE WHAT I USED TO LIKE ANYMORE, I'M LEAVING AND TAKING MY TOYS TOO, NYERH."