Because most of the time it's a cheap unnecessary conversion that makes the picture darker and the ticket prices higher.
And it costs us more, which no one likes. Sure, there's a 2D version, but when the movie is new those screenings are usually limited and if you want to see the movie in IMAX, then 3D is your only option.
I don't have a 3D tv, and have no interest in getting one.
Not really. If you look at the box office grosses from this summer, less than half of the money the big movies made came from 3D screenings. The novelty is fading, and fast.
If it's done right (like with Avatar), then it could be worth the extra expense. But most of the time it's just a cheap, needless conversion that most don't want to pay a higher ticket price for.
Since this is your first post here, you might want to be a little more careful with the attitude. Just sayin'.