I beta tested TSO & There but didnt stay around for either to go live. I played EQ & FFXI. The "game" I keep going back to, and have a lifetime membership at is SecondLife. There is no story, quests or themes. You make whatever you want. It has attracted many programmers & artists because of the building & scripting capabilities. No "needs" so many burnt out TSOers go there to socialize where you dont have to eat & pee. Like shoot em ups? Go to one of the outlands sims, build guns & blast away.
There's a free trial, just kill your account before the 7 days if you dont want to stay or you will be billed.