I find the reaction to 3d televisions quite interesting.
The most common complaint is "But I don't want to have to sit there with glasses on!".
Yet most people will happily walk around outside with sunglasses on, and even prefer to wear them because they think they look "cool", or enjoy the benefit to their eyes.
Suddenly when it comes to enjoying a visual experience in more depth, glasses become a no no. I could understand if the glasses were heavy and uncomfortable, but most of the modern ones are not.
The panels which display 3d without the need for glasses have a very narrow viewing angle, and are not quite as effective as having a separate view for each eye like the glasses based systems provide. (which is how we naturally see the world).
I think 3d is worthwhile, but with one major drawback at the moment. Films and most games (on consoles) run at 30 frames per second. This is low enough for your eyes to detect flicker if it is looking for it. 60 frames per second, or 16 miliseconds per frame, is high enough to fool our eyes and to make things look completely smooth.
With regular flat TV, we are used to looking at a flat surface which displays 24 - 30 frames per second. It looks "normal" to us, because we understand that we are looking at something which is displaying an image. However when we don the 3d glasses, all of a sudden our brain is fooled into thinking we are looking at the actual object on the screen, not just an object that has a moving picture on it. All of a sudden our brain's go "err, why is that person flickering when he moves?". Scenes which are static and where there is very little movement look good enough at 30 frames per second, but as soon as things move quick enough for us to detect that it is not completely smooth (I.E it is not 60+ frames per second) it doesn't look great.
Until movies are shot with high frame rate cameras, and storage media and video codec allow for 60+ fps playback, 3d movies will not be reaching their potential.
However, with the next generation of consoles, and with many current fast PCs, achieving high resolution games at 60FPS will be where the most enjoyment in 3d is to be had in the next few years.