I imagine that anyone who is serious about anything will end up building/designing some of their own tools. Maybe a custom pedal (or pedal board) for a guitaris

I imagine that anyone who is serious about anything will end up building/designing some of their own tools. Maybe a custom pedal (or pedal board) for a guitarist, a custom printer for a 3D-printing diehard, or simply designing the tools needed to perform experiments as a scientist. With software, it's a lot easier, especially over long periods of time. I still use a backup script I wrote 20 years ago, for example. Edit: not to say that the backup script is somehow special, but rather that it being software means that it can last a lifetime with minimal upkeep, unlike the tools made by toolmakers of old.