Well, I recently had this conversation with a hook-up who just wasn't in to me, so he showed me his 3DTV instead. (At least he let me feel him up during.)
This stuff has been around for almost 70 years now. Nobody cares.
I suspect that it has something to do with engaging your brain in the story.
As an analogy, I have
spent a lot of time trying to teach sophomores. If you knock yourself out, making a slick multi-media presentation for lectures, it just runs past their eyeballs, while their brains are engaged in sexual fantasies. If you just write shit on the chalkboard, which they are forced to copy in to their notebooks, the material actually passes through their brains. The difference in test scores is like, 50%.
I suggest that something similar goes on with watching 2D movies. And exponentially so with actually reading the book.
That said, I have dabbled in 3D imaging for scientific purposes. It can add useful perspective to understanding certain data. But the difficult thing is that you have to keep in mind that it's always a digital reconstruction, and you have to be explicit in all the steps you used to create it, in case one of them added some sort of bias. Many years ago, I had my 15 minutes of fame, and I sometimes wonder if it was actually because of the significance of my work, or the nifty 3D images that were reproduced in newspapers and magazines all over the world.