I guess Leica's introduction into the digital realm proves one thing right...that even Leica users "for life" can be convinced to upgrade every two years because they "need" some new feature.
I guess that's what drove me BACK to traditional photography...the M6 really IS a camera for life. What the statisticians above don't factor is the near-continual upgrade paradigm. We have seen it on the Nikon and Canon side of the house. It is now apparent in the Leica crowd. Sure, if you "shoot _ number of rolls a year, my M_digital is free!" Problem is, there will be an upgraded piece of hardware every two to three years, which people will feel the necessity to purchase to keep up their shooting. I saw it on the Nikon side of the house..."all I need is a high-ISO camera...that's it, then I'm set for life." Then, "I need a full-framer, to use my existing lenses." Then, "I need a more compact (or larger professional) body." Each iteration is $3-$5k. I did it for three cameras, and then gave up. I fell for it. And now, I'm fighting back by investing in a system (Leica M film) which WILL last a lifetime, work the same day one as day ten thousand, full-frame, works with ALL the M-mount lenses without coding or upgrading, is completely archival, light, works without batteries or cords or chargers or laptops, and I have my evenings free to drink and carouse. How does it get any better than that? And, best of all, I feel closer to my images while I handle the negatives in the semi-dark with my headphones on and a good whiskey in my hand. I LOVE glancing at glossy 8x10s hanging to dry, knowing that I MADE them, front to back.
I get tremendous satisfaction from all of the above. I don't get it from digital...I write big checks and get a mini-computer in my hands that I know I'd be happy with "if just..."