I canceled mine a few days ago for a few reasons...
-- After being kicked from my guild...kinda took the heart out of me. I really loved those guys.
-- I really, really, REALLY am sick and tired of all the bugged quests and stuff and being told "it'll be fixed VERY soon", only to wait a year and still never see anything.
-- I'm tired of effing Aeralik's constant buttrapage of the combat stuff and classes. Seriously...I don't even play a ranger and his farking of that class made me ill. Not even gonna go into his lovely response regarding Sleight of Hand.
And the biggest reason?... I'm having a kid within the next two weeks...I won't have time to play in between taking care of the newborn and my toddler.
But, I figure that after a break...I'll reactivate. I'd miss my friends there too much, and while I do gripe, the game is still fairly enjoyable to me.