The 3-D technology made me enjoy the film far more than I would have in 2-D, and that seems to be the case with most people...even Roger Ebert agreed, which was a shocker.
Technology should never be the only reason to see a film, but that doesn't mean it doesn't help ones enjoyment.
GONE WITH THE WIND was made more spectacular by Technicolor; THE ROBE is more interesting in CinemaScope than when cropped and/or panned and scanned. POLAR EXPRESS is cooler in IMAX 3-D. Taking the color, widescreen or 3-D away from these films would make them suffer.
At least the 3-D was used more like the 50s films; for depth and realism and not just for pointing sticks at the camera like the 80s movies were. Seen flat, there is still something to see....it just isn't as fun.