This fits with things other people who have worked with 3D printers have told me. I would have liked to see longer timescales described though. How many of thes

This fits with things other people who have worked with 3D printers have told me. I would have liked to see longer timescales described though. How many of these points are going to change soon or not-so-soon? I've heard that prices aren't going down quickly enough to make it economical for everyone to have a 3D printer in their homes in the near future, but it would be nice to see what other people think and to know about other issues blocking widespread adoption.