3D Technology is tricky, gimmicky, and overrated.

Most people are aware of the technical limitations of 3D (you need glasses / costly tv with lower res, you lose brightness (or even color quality) / you need to be right in front of the screen, etc.)

What people are less aware of are the perceptual issues. There is a rapidly growing handful of people who knows these things well, and they mostly work as "stereographers" in the movie industry. Their role is to make sure the some perception principles are respected. A rough list:

- The diverge of images should never exceed certain bounds, or it cause fatigue / pain to the eyes.

- The depth zero should always be assigned to what the viewer focuses on. As viewer, attempting to focus on non zero-plane result in eye fatigue due to conflicting inputs (convergence vs. accommodation). Prolonged attempts may lead to headache/dizziness.

- It takes time for viewers to adjust to different depths. Therefore the amount of disparity should be considered across the scenes while doing the cut. (you cannot go from no depth to full depth in one cut).

Add to this the fact that about 15%-30% of the audience will not experience proper 3D as they partially not use stereo vision to perceive depth (they still see 3D in normal life, but thanks to other cues like occlusion, relative size of known objects, illumination/shadowing, etc).

I probably forgot some stuff.

There are two considerations:

1) If you don't do it right, it may hurt more than help. Now for a short production, you can stress the viewer much more, but susceptible people will get disturbed anyways.

2) If you do it right, it end up much softer and limited than one would it like to be. Sure, it adds a bit of touch, but you can consider it of the same value of all those editing touches about colors, grain, sound compression etc. that indeed make movie productions step up, but that are hidden in the production a no one would ever think using for advertising.

So, If it wasn't for the movie industry strive to keep an "edge" over home cinemas, almost nobody would know about it, and for good reasons.