Ok, I'm making some assumptions about 3D movies, admittedly. --I just figured that the only reason anyone liked Avatar was because the 3D effects made up for the horrible plot. At least, that's the only reason I can think of for why anyone would like it.
One of my eyes is a good bit stronger than the other and I've never been able to see those 3D holograms and don't have true depth perception.
Interestingly enough, Avatar did work in 3D for me (though the effect did seem to depend on how close I was to the screen - closer worked better). Its the only 3D movie that has worked, but admittedly I have not went to many since I figured its a waste of time if I can't see the effects anyway. I tried a 3D TV last year and it didn't work for me at all. Avatar did though and while I don't know if the effects made the movie more immersive or anything, they were certainly interesting. It was really the simplest effects that had the most impact: sparks, rain drops, clouds - stuff like that.
Making 2D movies into 3D seems completely pointless to me.
