I saw it in 3D and I am now absolutely, 100% convinced it is a con. There is little to no benefit seeing it in 3D, you have to pay extra for the "privilege" and as I saw with Avatar, they take a film which -whatever you think about it- is sharp and striking visually and then ask you to watch it with bloody sunglasses on!
So far, I have never seen a 3D movie. I'm tempted to give Werner Herzog's Caves of Forgotten Dreams a try when it finally comes to German cinemas next year. But even there the reviews indicate that the 3D doesn't really work. And I will definitely see Wim Wenders' Pina, although I'm skeptical about its 3D as well. On the other hand, if even real filmmakers fail to get the technology to work, it will reassure me that I don't have to pay attention to it at all.
Maybe he'll keep it black and white too... that should help.
The irony is, many of the major developments of CGI, motion capture and even 3D, that you rant and rave against so strongly... are precisely because of Tron!