To clarify my answer
3e brought me back to D&D, having wandered away from it in the mid nineties.
For the record, I moved across the country just a few months before 4e came out. The group I was playing with is not moving over to 4e, and is utterly uninterested in it (I believe they're playing WFRP now), and my 3.x/house blend game is going here with people who've never played 3x before - I've got the 4e books but we're not playing it right now.
So far as I know, of all of the gamers I know (and that's plenty) no one else that plays D&D is terribly interested in converting. Which surprises me.