I have an old project I gave up on - haven't touched it, done any code changes or maintenance in... almost a decade? At least a stubborn client is still using i

I have an old project I gave up on - haven't touched it, done any code changes or maintenance in... almost a decade? At least a stubborn client is still using it, successfully. And it's not an old guy in a living room, but an honest small sized company that has this software as the core of its operations. So yeah, I totally agree with you. No code changes = long life.