I still have several 35mm cameras. One of my older units, a Leica, doesn't need batteries. I have stockpiled a lot of film, thinking essentially the same thing as you. To chronicle what life was like. I dabbled in developing when I was a kid, but I don't have the gear for it anymore. So I figure I'll hold on to the negatives and maybe some day I'd be able to get them developed, or at least they'd come in handy for someone.