Is it ever enough?

It strikes me that continuing to tinker can be either positive or a negative for a given individual. When I make changes intending them as a remedy for something deficient, I don’t always know if that emerges from an inability to be satisfied and happy with what I have, or as a legitimate process of improvement.
For me, the question of when is my system excellent enough to simply sit back and listen to it for the rest of my life is difficult to ascertain.
Obviously, a lot of people don’t care about this and simply enjoy trying to perfect their sound, independent of any such concerns. And, of course, there’s nothing wrong with that, or it’s opposite, which I would call being satisfied on a budget, or perhaps having the benefit of less discerning ears in terms of budgetary effect.
Anyway, I’m curious, if anyone else is interested in this topic, to hear what they think. If the topic doesn’t interest you, you’re probably better off responding to someone else’s post.