Ya, that can be annoying, but there may be happy accidents that take the sting away. A few years ago, my daughter's N80 jammed on vacation in Chicago. I manually rewound the film in a changing bag, leaving the leader, but made the mistake of throwing the roll in my camera bag. A month later, on vacation in Arizona, I accidentally loaded the film into my N80, resulting in about a half-dozen serendipitous shots like this:

chicago-arizona-double-expo.jpg

We had often shared darkroom time, but this is the first and only time we have shared photo credit for the same roll of film.

Cheers,
Tom