Warcraft isn't what it used to be. There's been a lot of changes to everything over the past decade. While the base of the game is there in some regards, it's hard to say that the experience of WoW is anything like it was when some of us first picked it up. In 2004 the game was, quite literally, your second life. Now? It can be a casual companion, one that you can come and go from with ease.
This fundamental change doesn't sit well with some people, but with others its something that's allowed the game to keep with their lives after all these years. I fall into that category -- there's no way I'd be able to enjoy the WoW of 2004. I can't farm mats forever, and I can't spend five hours every night raiding. Some days I can only log in and play for 30 minutes, others I can binge for hours and hours. WoW has evolved as my life has evolved, and I love it for that.
Lately there has been a lot of unhappiness in the community. Changes that people don't agree with, things that have happened that make little sense to a lot of people. I'm in that group too -- I don't like everything I've heard out of Blizzard lately. I don't get the change of the capital locations. I don't understand the mass removal of abilities. And even though I'm happy about something like the auction house combination, I don't feel like we have all the answers and it leaves me wanting more details.
But, all that is secondary and needs to be put into some context -- and this context is something that the community needs to come to terms with quickly.