To tell the truth, I played Lineage 2 MMO for 3 years. I've done a lot of things with the people from my clan and met a wonderful girl who was my girlfriend for the last 2 years, which only added to my enjoyment of the game even if this "bonus" wasn't included on the package. As yahtzee pointed out, all MMO are the same stuff. It doesn't really matter if they're Korean made or American made. They're all the same shit. I also never payed a subscription. I played on a private server, and the game software was free to download off the official website. So after so much time in an mmo I think I can have an educated guess as to how things are. Without further addo, I will state why I don't care for World of Warcraft.
Number 1. It is repetitive. Despite diversity and stuff and the fact that you can customize your character to some degree, it's all really constrictive. Maybe warcraft has a bit more customization than Lineage 2 had, but at the end, it's the same character dressed in the same best piece of armor out there that forums said is best for that class at that specific level. It doesn't matter what skill tree you take because usually the difference between actual skills is almost unperceived or the other skills simply aren't useful. In the offshot that some of them are, I'll say that they're the exception to the rule.
Number 2. The players themselves. It is hard enough to find quality people in real life to consider them quality friends. Let's assume that they don't particularly care to join your newest quest to find the onyx dick and plant it in i don't know who's ass in order to stop the Litch King. Decent people on the internet are so few and far between it's a miracle if you can find a guild that doesn't have at most 5 people that piss you off. I'm saying that on the offshot that you're a more tolerant person than I. With my older clan I hated with a frenzy 5 people, disliked 10, were neutral about 20. The rest of 10 or something people or what added to the maximum, I forget, were the only decent people I knew, and with some I still talk. I also had to put up with all the flame wars and the drama between clan leaders, clan members and whatever, going on and on about who's sausage is longer. You will never find this in a roleplaying community. If for some reason something like this does occur, it's usually dealt with swiftly, unless the server owner is amused. Also, the community is the tool for spreading leetspeak and the subsequent and thorough mutilation of the English language, and other languages.
Number 3. Recurring payment. I have already payed for the content in this game. Why do I need to pay more? I agree, new content needs to be payed hence expansion packs. Hell make em pay for patches. But not recurring payments. Guild wars managed this (this might be old info or something of the sort, but that's what I heard). Why can't you? Again I say, I never payed for playing Lineage 2 and never would have if that would have been the only option.
Number 4. I'm going to assume that you have spent over 1000$ of subscription fees and purchases related to gameplay in Warld of Warcraft. When the servers finally shut down, you have just spent 1000$ worth of other games on World of Warcraft. With that money you could have bought a shitload of games that were all better, more lifechaning, more fulfilling, more thought provoking and most importantly MORE FUN than world of warcraft. Dwell on that thought for more than a second. And I bet that most of the high levels out there today passed the 1000$ mark of their or their parent's money, way before my posting of this.
Number 5. It's simple as breathing. There are no real tactics involved in that game. The only tactical challenges Lineage 2 offered, was in the wars, but they turned chaotic fast, and how to avoid the annoying but powerful enough mobs till the place you wanted to farm. I was especially good at the latter.
I apologize for the long post, but I felt it necessary to say that while some people may care for world of warcraft, in my opinion it is the game with the worst expense to experience ratio out there to boot. The fun only lasts a short while and returns only when you do something spectacular, like kill the 1000 people raid, rape everyone from the alliance/horde in pvp, get the awesomesauce armor and that's it. But 90% of the time, you will be farming. Either quests, players or mobs. And to quote Yahtzee again, I don't need another job I have to pay for.