I used to. I don't anymore because as a starving college student that $15 a month is a lot of food. (150 packets of ramen noodles) Can't afford to, but I would if I could.
I do but dont have one to play at the moment... Kinda waiting for the new Final Fantasy but no time and no money for a subscription... People wanting me to play Guildwars but that makes me want to play FFXI, which I wont pay for. Go figure lol...