I can't believe I wasted the time to read this thread, but since I did, I am going to jump on the soapbox.
Film is commercially dead, for commercial purposes with rare exceptions, digital has replaced film and will continue to do so. To use film is not practical or economical. I am not talking about the select few wedding photographers and etc that still use film. And I know many pro's that do mix and match film and digital, but for the most part, if you are a professional, you are using digital. It just makes sense.
But I am guessing petty theft will keep film alive for a long time. Example, wealthy, computer savy family loses all their computers and laptops to a burglary. In spite of all the street smarts, the time was never taken to back-up all the photos from the past two years of family holidays in Europe, Asia and North America. Gone just like that. Yep, their own stupid fault, they should have used all the archival technology that has been discussed here, but sometimes there only so many hours in a day. I know a family that has just switched from digital to film! Burgulars tend to steal a laptop quicker than a photo album. And yes, the could have lost the negatives to a fire, flood, etc.
As for film or digital being more archival, while I am no expert, film wins hands down. Do not start the tehno talk, because there are fewer people archiving digital as discussed here than people still shooting film. Nothing more needed than a dry, dark place and a light source to retain and retrieve the data from film, just too simple and easy. I am a bit of scavenger, stopping to dumpster dive and check pile of discarded rubbish. I see piles of computer and hard drives, I never think, I bet that hard drive is full of photos. But I often find boxes of photos and negatives, and I can quickly scan contents to see if there is anything of historical interest. So film is still the easiest method of preserving images, whether they are worth anything or someone else will ever want to see these images is another subject.
In reality, digital or film, both are vulnerable to irreversible damage from fire, water and acts of God. As for how long will film be around, I think, it will be around for a very long time and digital will continue to improve.
I just can't believe how lucky I am to live right now, when I have so many choices to make images, film, digital or a little of both.
That is all from me, I would rather be taking photos than talking about them.
my 2¢,