Apologies if I am wrong but I think this was me. I didnt actually say I have never been impressed by 3D, a few movies in the format have impressed me, Avatar included. But Gravity is the only movie I have seen were I would never watch it in anything BUT 3D. Watching Avatar and others in 2D they were still amazing films, but I actually honestly think you would lose something watching Gravity in 2D, it would still be an amazing movie, but for 1st time I would have to say watching it in anything other than 3D would be a dis-service to the movie itself.