For the miniture wargamer, R/C car enthusiast, model-builder, or other such hobbyist, a 3D printer could be a godsend.
The problem with the quality of such home-manufactured items is irritating, yes, but that has more to do with what the home market is allowed to have.
I am typing this message on the keyboard dock of a tablet computer that represents computing power in excess of the first three desktop systems we had in the house combined.
I have a Bluetooth headset through which I can say the equivalent of "Computer, get me the Captain."
There really is no reason that "professional" and "home" markets cannot be melded into a single market in which only quality products with a long lifetime are ever produced save for the fact that it does not happen. The dichotomy is a false division. Storage, memory, and processor power are becoming so cheap that, very soon, we should all have a supercomputer sitting in the home office. The problem is the disposable culture mentality. Nobody expects an item to last because they are made to not last, be difficult or impossible to upgrade, and they tend to be just expensive enough to replace that to spend more on a "professional" model one could only expect to fail as quickly as the "consumer" version flies in the face of logic.
"They don't make 'em like they used to" should not
be a condemnation of the modern age but a statement of relief that things are so much better now.
It is evidence of a sickness in the system that it just isn't that way.