Is it valuable for programmers to discuss and refactor code to maintain a consistent casing pattern?
Is it valuable for writers to edit books to make sure they use consistent language throughout?
Is it valuable for industrial designers to iterate on the amount of tactile feedback a dial gives?
Is it valuable for musicians to continue to tweak their guitar until they get it to just the right tone for a song?
If none of those ring a bell, keep looking until you find a craft that you feel you have a strong control of, and then find the equivalent comparison. I guarantee one exists for every craft.
It's very easy for people unfamiliar with a craft to belittle refinement as useless, but only because they have an underdeveloped sense of the impact of the craft on how users/readers/listeners make decisions.