In terms of popularity, nothing's gonna kill WoW for a long time. In terms of quality, I'd say there are already plenty of other games.
The trouble is that games like that become popular...by being popular. If your friends aren't there, then it's no fun. And everyone plays WoW.
The trouble is that games like that become popular...by being popular. If your friends aren't there, then it's no fun. And everyone plays WoW.