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storage in a medium that will soon enough become obsolete
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It's a fact of life, with the ever changing technologies any media will become obsolete in the course of time. When they stop producing film stock in 5, 10, 20 or 100 years time will it not become obsolete ? Change and obsolescence has kept industry working to put food on mankind's table.
Music recording is a classic example of the different media formats used throughout its history. With its own set of debates on the merits and demerits of each format.
Should we all still hanker for the personal service of telephone operators making our call connections or be grateful to Mr Strowger an undertaker for his invention in 1890 that has led to direct dial to anywhere in the world.
Film has some advantages over digital and digital has some advantages over film. Swings and roundabouts.
Perhaps we should start yet another thread to debate whether film and its processing is more toxic than semiconductor sensor manufacturing.
On trawling the web there appears to be a number of flawed tests/examples on the film vs digital debate. None of them conclusive enough to say there is an outright winner especially when you take full frame sensors into account. On Birdforum Nigel Blake produced a link to an informative article on photon collection relative to pixel size and its impact on image quality.
Now that the pixel war is just about over maybe the emphasis will be put on improving dynamic range. Much of films dynamic range is due to the flattened toe and shoulder in the response curve. These areas will have a much reduced contrast. In fact on recent DSLR models there has been a trend to provide options that flatten contrast in the highlights to reduce burnout.
At the end of the day it is all about tone mapping to whatever output media your using. Film or sensor, neither use a transfer function that is true to life. For very high dynamic range scenes massive tone compression has to take place to fit the image onto the limited contrast ratio of output media currently in use.