The Daily Grind: What MMO do you regret leaving?

I've played more MMOs than I can remember over the years, and nearly all of them have failed to capture my long-term interest. Most of the games in my also-ran box got a first look because of some quirky feature. Most of them didn't get a second look because -- aside from said feature -- they sucked.

Every once in a while I'll regret leaving an MMO, though, and none moreso than Fallen Earth. Though I played extensively at launch and for a month or so after, I inexplicably forsook the wastelands for the world of Atreia. Upon returning to the game a few weeks ago and reconnecting with some old friends, I had to stop and take a moment to wonder what the heck I was thinking back in 2009. What about you, Massively crew? Have you had any similar head-scratching moments after rediscovering a previous title, and do you regret leaving it?

Every morning, the Massively bloggers probe the minds of their readers with deep, thought-provoking questions about that most serious of topics: massively online gaming. We crave your opinions, so grab your caffeinated beverage of choice and chime in on today's Daily Grind!