Of course, Ethic's issues aren't really with deciding to return or not: he's having more issues actually trying to get his old accounts back. There's a laundry list of rules and limits to contend with, between dealing with having or not having the expansions, the limits on the Scroll of Resurrection program and the trial accounts, and dodging all of Blizzard's various limits on how to start and use new accounts to the game. Man -- if I had left and was planning on coming back, and I read Ethic's post, I might not even bother.
But quite a few people have come back, and I'd guess that even though there are confusing things about trying to find your way back into the game, a good number of you have done it. I'd like to know, so here's a poll: how many of you have left and come back, and how many times?