To be clear, the only reason I think Scrax should see Avatar in 3D is because that's really the only reason to see the movie.
Honestly, some things are worth experiencing for that reason alone. You don't ride a roller coaster ride expecting to have your preconceived notions challenged. "Welcome to the Georg Hegel ride at Six Flags' Magic Mountain! Please keep your arms and legs inside the vehicle at all times, as questioning your felt inclinations in this matter may lead to you reaching your finitude."
This isn't one of those movies where the 3D was an afterthought after-processing designed to capitalize on a fad (Last Airbender, Clash of the Titans) or something that was possible due to the inherent nature of the original source (any computer-animated film), but rather the whole point of the movie in the first place. The plot was grabbed off-the-shelf on purpose -- a tried-and-true story that could help work as a vehicle for demonstrating a superior 3D cinema experience. The 3D experience is the only reason to watch.