G.L.
I am among the discontented. I did see it in 3D, for the same reason you did, and I found it jerky, but I suspect the problem had more to do with the 48 frames per second format and the filming and editing choices than the 3D. The folks directing the camera work are a bit too enamored with odd camera angles and fast cuts, which made action scenes jerky and hard to follow. Also, at that resolution, it is impossible to seamlessly integrate CGI and make-up effects. Fake stuff looks, well, fake, much more than in the LOTR movies.
But my biggest beef is what Jackson has done to the story. I do understand that going from book to film requires changes. I was able to make peace with the changes made in LOTR - I think for the most part they made the film version stronger than it would have been if it had strictly followed the books. But I can't say the same for what Jackson is doing to The Hobbit. This isn't The Hobbit any more. This is a story increasingly loosely based on The Hobbit. The material added (with the possible exception of showing us where Gandalf goes when he leaves the companions) does nothing to enhance the story, and many of the things cut were things that made the story richer. Bilbo has become a secondary character in his own story.