I think that debmirror is possibly the only price of software that I wrote for my own use, and that got packaged up for Debian by someone else without me even asking. It was pretty popular even before it became part of Debian, since it met a need that no other tool was able to fill at the time. But I was never interested in meeting other people's needs with it, just my own, so I wrote it, made it work for me, and abandoned it to the Debian maintainers.
The funny thing is that I still use it today, and occasionally chafe at some things I don't like about it, some my fault and some added by later maintainers, but I'd not think about trying to change it. I think a lot of us treat a lot of software like that, although not often software that we wrote ourselves.