He pretty clearly makes his conclusion first, uncritically accepts anything that seems to confirm it and ignores or rejects anything that doesn't.

EDIT: And just to be clear, I am not a fan of 3D movies. They're never worth the $5-7 premium and I really hope to see the trend fizzle out and not become the norm. But a bad argument is a bad argument.

I've NEVER had a problem with headaches or any discomfort during a 3D movie and have never had an issue with paying an extra 3 bucks for the 3D, except when the movie was shit, in which case I would have been ticked off anyways.

So I really can't talk on either side of the issue.

Yeah, from what I understand the process they use to convert a film to 3D in post is similar to the way they make simple 3D matte paintings. They basically take the various composite elements and project them onto some geometry in 3D. A lot of the time it's just flat planes, so you end up with a 3D effect that's more like one of those "magic Eye" posters instead of something that's really 3D. I mean, they can use whatever geometry they want and have that geometry recede into the distance or seem uneven or whatever, but they're not about to use geometry that's anywhere near as detailed as it needs to be to make the 3D effect not look like crap projected onto some basic geometry.

I like 3D and I think in the right DP's hands it could be used to add a whole extra layer of 'depth' (see what I did there?) to visual compositions. I think Cameron had the right idea, I think he just went overboard and had too much crap going on in any given shot. There are some really great moments in Avatar where the depth adds a hell of a lot to the film, in my opinion. The movie just suffers a lot from the same sort of over-indulgent big-budget CGI masturbation that the Star Wars prequels had. It's not as bad, but Cameron is kinda drifting in that direction lately.

I think there's so much hate for 3D because there's really two different fights going on. There's the pro-3D people who go see movies in 3D and the anti-3D people who talk about what a worthless gimmick it is and how it gives them headaches and whatnot. But within the pro-3D group, there are also two factions: The "I want stuff to jump out at me" people and the "I want an immersive experience" people. No matter what 3D movie comes out, you're always going to have at least two different groups of people talking about how shitty the 3D is - and then potentially a third crowd if it's a movie like The Last Airbender that looks like crap in 3D.