Those of you who say digital is superior have never shot large format.
Digital is good, but it is limited.
For the average amateur digital is superior because it is easy to use, but there is a reason why nearly all art images are made with film cameras.
I actually don't use one or the other, I use both. I meter the scene with digital, and shoot with large format.
my 200 dollar 5x7 setup with 210mm rodenstock sironar lens produces results far superior to any digital camera out there.
Digital is catching up quickly, but film is still much cheaper for the quality.
Compare even a 40 megapixel 60inch print with that of a print from a 5x7 camera. even at the smaller print sizes, the tonal reproduction and the way the image is rendered is superior in large format. If I remember correctly, a 5x7 negative is equivalent to over 1000 megapixels.
Pierre, your problem sounds like user error rather than a fault of shooting with film. Film is actually more reliable because of the redundancy possible.
Large format shooters usually make more than one of each exposure (usually two, one for each side of the holder)
So if you mess up a negative, you still have another one.
One thing that hasn't been mentioned also is you can control film speed after taking the shot. With digital, if you underexposed a shot, you lost the shot, unless you shoot again at the proper exposure.
With film, if your first negative comes out underexposed, or with too much or too little contrast, you can fix it with the second negative.
Digital cameras have bred a generation of mindless photographers, just snapping away making thoughtless mundane images.
Digital cameras let you take an image without any thought other than pushing the shutter.
Film allows you complete control over the process, but like anything that is manual, you have to think about every step. People hate to think, so they prefer a camera that thinks for them.
It is not a question of which is superior, but rather what suits the intended purpose the best. I use both, but my final work is made on film.