Almost 5 years and i'm still playing.
Do not be influenced by those who compare this game to other MMO titles - because it doesn't even begin to correlate. As an MMORPG fanatic, I can honestly say, without a doubt, that this is the best game of its genre. It's fun, strongly addictive, well-designed, hugely rewarding and absolutely beautiful. There's nothing quite like it. Essentially, it's an almighty combination of the best action-RPG properties in one package, and then some. On top of that, there are no monthly fees. Crazy!
Buy it. You won't regret it.