I have to agree with sine-out on this one. If we had real 3D technology (think star trek-esque holograms I guess) then it might be useful since you could see different parts of the image depending on where you were.
I'm not saying that current 3D technology isn't cool, but I don't think it's at a point where it would be particularly useful or economical outside of a theatre environment.
I agree with you and @sine-out on that point. It's sort of cool, but only in the sense that it's something we don't see too often. I'd really like to be able to turn my head and see around some object in a movie, but how it is right now, it's just an amusing thing to see sometimes at the theater.
I think that while it surely is an interesting technology 3D won't get into everyday life soon. Just because of the fact that you need to wear the shutter glasses to experience the thing it seems pretty uninteresting for everyday use BUT very interesting for watching movies... I also think that 3D will evolve more and possible one day will give a 3D picture on a screen instead of having to trick your eyes into it, which would be much more interesting for home use.
On a sidenote, people having issues with this stuff would feel left out due to the picture quality without glasses. I never saw a 3D movie but I'd like to, just to judge it, but I can imagine there are folks not reacting too well to the whole specs thing.