I quit because well... I didn't play for three months and I got fed up of not being able to join games because I did not have the expansion pack. My account got shut down, which was annoying to say the least. I can no longer use my level 58 barb.
I've heard Legend of Mir, another online game like Diablo2, is quite popular now but it costs monthly and I'm not willing to pay anything on a monthly basis at this time. That was one of the good things about Diablo2, it was free.
Retro.