Oh, I should elaborate a little more on the circumstances of my quitting the game. I was in Brisbane, Australia, doing my final semester of my Masters, which included writing my thesis. That by itself was not so bad, but Brisbane is GMT +10, so for me, raids started at 11pm and ended at 3am. So even though the raids were fun, the following day would be completely wrecked as something or someone would cause me to wake up at 6, leaving me with only 3 hours of sleep. And since I don't really enjoy PvP, I was left with no end-game to pursue.
I've since graduated and am now back in Singapore.