When 3D printers come down to an afforable price, 3D scanners must also be affordable and understandable to specialized hobbyists like us. Beyond that, while there will be aftermarket companies providing software to reproduce certain subjects and, like other companies providing final 3D printing, normal people like me will never master the process of creating our own CAD/whatever designs to make models to our desire, at least not without scanning. Which probably won't happen in my shrinking lifetime.