I really hate 3D movies. Mostly because there are very few films that are actually made to be in 3D. Avatar was great, but it was unique. Most films today come out in 3D and have virtually no real 3D content. What happens is you end up having to pay extra, put on glasses, and get a headache watching these ridiculous 3D movies which are actually just 2D.
It darkens the film. It makes some of the parts of teh screen blurry if you end up getting a bad seat at a poor angle to the screen. And it can give headaches. And the worst part is that now Star Wars EP7 is falling in line with this. I don't want the blurry darkened mess, that is 3D movies, to be the way I see Star Wars - HOWEVER I DO want the high resolution that comes with IMAX - but it seems there is no middle ground. You either see it 3D, or you get stuck watching on a small low-resolution screen.