I have solved the problem of women's shoes forever, as long as you think the problem is never finding shoes that fit and match your clothes. With a 3D printer in your home, assuming you can find goop that wears well, you could print shoes that fit your feet perfectly and always match your clothes. You'd never be without the perfect pair of shoes, but you would have to put in work to design and print them yourself.
Mokalus of Borg
PS - And you'd probably end up with a house full of prototype shoes.
PPS - Which I know sounds like winning to some people.