“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.”
I think software as a whole suffers greatly from this "well, I got it barely done, technically fulfilling the requirements, so my work is over" attitude.
1: https://www.goodreads.com/quotes/445621-when-you-re-a-carpen...
For some engineers, the thought of leaving some things undone gives them the icky feeeling, while the thought of not completing a challenge in an expected timeline doesn't bother them. For others, it's the opposite.
I think this holds true even for personal projects, where there's no manager or sprint to impose a time constraint.
But it's a spectrum where most people are somewhere between the extremes.