I have to note the opposite trend -- 3D movies make my brain feel good. Like viewing autostereograms, there is something intrinsically pleasant going on perceiving the image.
In addition, they can be quite helpful in picking out a complex image. In one of the Marvel Hero movies, there was a scene with a multi-tier command deck, with lots of movement. The 3D image allowed picking out the forefront -- which is where we were supposed to pay attention to what was going on. This acted as a helpful directorial clue, so find it an addition to the medium.