The people who are getting 3-D printers at home are pioneers, kind of like the people who bought Apple IIs in 1981. Adults are usually the last people to get it. The kids are like, 'Get out of my way, I want at this thing.' They immediately start getting creative.
One of my psychoses is that I feel like I can do anything. Actually, I believe anybody can do and make anything, even things that don't exist. The making isn't the hard part; it's having faith. If you do only reasonable things, you'll never start your own business.