Other than relative costs, what reasons are there for shooting 35mm other than portability and the ability create more exposures, faster and easier? For me the ability to spend 15 minutes getting multiple variations on a subject as opposed to one, is the reason I'd consider sacrificing things like image resolution, camera movements and the ability to process exposures separately.
Off the top of my head, additional reasons for using 35mm include:
1) greater depth of field for the same image size (after enlargement, of course),
2) high speed lenses,
3) wider choice and greater availability of film,
4) wider choice and greater availability of processing,
5) Kodachrome (subset of # 3, but certainly not of #4)
6) ability to project (at reasonable cost) transparency materials.
One other point that appeals to me, but I don't see referenced above, is that when I use 35mm, I tend to work toward a goal. This is probably a remnant of my time as a photojournalist, but I tend to approach a subject as if I was stalking it, taking pictures as I move toward my final result. The first shot will emphasize one aspect, the next may be from another vantage point and emphasize something else, the third may be closer, and exclude setting, the fourth may include more of the surroundings.
I find that it helps to choose one approach to an image, "record" it, and than try another approach, note (in my mind) how it differs and take steps (through exposure, or framing or varying depth of field or varying light) to emphasize the change.
Some times, the last photograph taken ends up being the photograph that most accurately reflects my intention. Other times, it is one of the earlier ones that ends up being the most successful. In any event, the process seems to be important, and 35mm film makes the process practical.
Matt