Science may eventually explain the world of How. The ultimate world of Why may remain for contemplation, philosophy, religion.
Whereas 'Avatar' and other movies get shocks out of their three-dimensionality, 'Gatsby' is going to be about inviting the audience into this larger-than-life drama, letting them almost be inside the room rather than looking at it through the window. I think it will really work.
I love the theater, but if I had to choose, I would choose a film at this time in my life. Something meaty, to sink my teeth into.