This is how it works:
I watch a show - if it is 480i, 480p, 720p, 1080i, 1080p, or whatever is in a theater... I watch a show. If it stinks, I feel shafted. If it is entertaining, I'm pretty happy.
3D, resolution, whatever are just enhancements of the presentation of the story we enjoy... if there is one. From children to nearly-deads, this is the fact. Story over video quality. Resolution is an enhancement.
Since you are a videophile, your life revolves around the gimmicks. I make games -- same thing. But for every (insert technology)-phile there are 1000 don't cares, and 100 wish they could tell the difference.
I certainly won't go out and buy a 3D tv... unless my current one explodes by accident. It does 1080i and it is pretty nice (I've had it since before 1080p existed). Can I tell the difference between 1080i and 1080p?... not usually - especially when watching a story. Can I tell the difference between 480i and 1080i, yup. Does it make my life miserable? nope.
The real question is, "is it enhancing the story?"
If it is nearly always 'yes', then its needed and will sell, but sadly, it is nearly always 'no'. Gimmick.
Lets face it, 3D tvs are about as useful as a kick to the balls. I'm not going to be wearing shutter glasses in the kitchen while I cook and watch some lame ass 3D show to fill in my waiting periods. And at 30-40 feet, a 1080p show looks no better than a 480i tv show.
Don't get me wrong - I love HD, but to claim it isn't a gimmick? it certainly is.
Is it better? yup.
Is it enhancing the story 9x? no. I'd estimate, maybe 10% better. I still go to the movie theater because it is completely engulfing me, but the video quality in a theater, isn't the reason I go.