I dunno, maybe I didn't give it enough of a chance, but I found it extremely dull. There were a ton of people running around, not a whole lot of bad guys to fight, and I couldn't see spending the time to try and build up a character. When I finally found a blasted mosquito (that someone else wasn't already trying to kill), or whatever it was, half the time the thing would run away before I could kill it. And I could never catch the damn things since it was hard to hit it when it kept moving away from you. Chasing a mosquito to earn tiny amounts of experience, then finding out that you're lost and have to find your way back != fun. I did have a shittier computer back then too, and the load times were horrible. But still.
I support the idea of these games, but I doubt I'll ever get seriously involved. I thought the idea of Sims Online was kinda neat until I realized that it was like living a fake life instead of living your own. I wanted that WWII online thing to be cool, but I read it had some problems. That would really interest me. Driving tanks, flying planes, or just running around shooting people. Then again, maybe not. Ah well.