I would posit that's the main difference between a craftsman and an engineer. A craftsman pours his heart and soul into his work and aims for perfection. An engineer, on the other hand, has to work within certain constraints, such as time and budget.

Of course, the definition of "perfect" is different for everyone. The point is that craftsmen can wait until they're fully satisfied with what they are working on before releasing it. Engineers don't have that luxury.