A snapshot of source code can be useful as a basis for some other project. However, you're also correct that, if the source code is abandonware and you/others have no interest in maintaining it, it almost certainly becomes less useful over time and at some point just breaks.
A snapshot of source code can be useful as a basis for some other project. However, you're also correct that, if the source code is abandonware and you/others have no interest in maintaining it, it almost certainly becomes less useful over time and at some point just breaks.