The decision to use film is not purely based on any aesthetic or tangible quality (though anything along these lines does add to the decision). Rather, it it is based on the notion that film is the true medium through which the art and craft of photography is expressed. A similar sentiment may be made in regard to painting. Though many artistically excellent pieces of work are made using digital means that resemble paintings (down to paint like textures and expressive or graphic brush plug ins) the end result is not a painting. It is a facsimile of a painting. This is not in any way meant to say that those using digital media are not excellent artists; they are just not painters. To be a painter, one must use paint. To be a photographer, one must use photosensitive materials that exist outside of the devise used to create them.