Hey, I have a news flash for you, shitty HD or 3D movie is shitty in 2D as well. I swear half these responses sound like "i went to see a movie i probably wouldn't have liked anyway but i saw it in 3d and also got a headache so 3d is the worst thing ever since hitler". I'm sorry you didn't enjoy it, but 3d probably wasn't the real problem.
How to Train your Dragon, Coraline, Alice in Wonderland are movies that I saw in 3D then in 2D. I enjoyed all of them but felt the 3D was totally unnecessary and even served to break my immersion in the films at times.
So no, you're talking rubbish.