[citation][nom]TwoDigital[/nom]I look at it kind of like the change-over from black/white to color film. Purists were against the move saying color wasn't necessary and took away from the art of filming... but it's closer to how we SEE. It will take off once they figure out how to show these movies without the need for special glasses. It'll see moderate success in its current form.[/citation]
I agree with you to a point. The problem is that 3D in current movies looks awful and directors haven't figured out how to do it properly yet. You always get the feeling that the director is just making things 3D because it 'looks cool', not to make the movie better.
Once the technology matures a bit (and yes, no more glasses) and the directors figure out how to take advantage of it without the kitschy feel, then I'm sure that 3D will because worth the time. But like any transition, it just takes time / money / experience.