Digital discussion . . . hmmm . . .Hey Sparky, how's this:
Snapped the film out of the canister (manual advance) while shooting a game for high school yearbook. No place to open camera so I had to quit early. I would later want to scan those shots for Throwback Thursdays.
Shot a roll of Ectachrome at the wrong ISO and didn't realize it until after I had sent the roll off to be developed. Years later, I would want to scan those shots to JPEGs.
Had loaded a couple of canisters from a fairly new 100' roll of Tri-X (high school, again). We didn't have a bulk loader so I'd just use the arm stretch method, cut the film and spool it by hand. The problem was when I turned on the darkroom lights. I'd forgot to put the big roll back in the can. Years later, I would have liked to scan the shots that were junk because the film was flashed.
When the DSLR was new and I still only shot JPEGs, I took a bunch of photos with the wrong white balance.