Yea, I've always considered craftsmanship to be about paying attention to the details and making everything high quality--even the things that the end user will never see, but you know are there. The Steve Jobs quote sums it up nicely:
> "When you’re a carpenter making a beautiful chest of drawers, you’re not going to use a piece of plywood on the back, even though it faces the wall and nobody will ever see it. You’ll know it’s there, so you’re going to use a beautiful piece of wood on the back. For you to sleep well at night, the aesthetic, the quality, has to be carried all the way through."
If you look at back pieces of old classic furniture made during hand powered tools era, its mostly very roughly finished. Professionals rarely had time to spend dicking around with stuff that isn't visible.
To take it a bit further, the "unseen quality" does surface periodically, like when the proverbial chest of drawers ends its first life, and goes to the dump or gets restored.
The same is true in software when a developer inherits a codebase.
Those signs of quality turn into longevity, even when they face away from the user.
> "When you’re a carpenter making a beautiful chest of drawers, you’re not going to use a piece of plywood on the back, even though it faces the wall and nobody will ever see it. You’ll know it’s there, so you’re going to use a beautiful piece of wood on the back. For you to sleep well at night, the aesthetic, the quality, has to be carried all the way through."