I have to agree here, that one of the magical experiences of having a 3D printer is to be able to think something up, design it, and have it in your hands within an hour or two. Until people are able to experience that themselves, I think people won't really understand 3D printing. Currently, 3D printers and 3D modeling software doesn't make this easy, but I think there's a lot of effort being put into ease of use.