I would camp on the Moon in a heartbeat... and I would bring my kids,... and a telescope. And we would marvel at the wonders of the Earth and eat freeze-dried ice cream sandwiches.

Keyboard solo, JJ ABRAMS,...

Really my problem with this is the idea that it will be "free" to have the machine build more machines. Look at the 3-D printing space right now. The idea behind a RepRap 3-D printer is that it can print out a copy of itself. This is a compelling concept, but in fact you still require ~3-500$ worth of additional parts. The printer makes some of the structural elements, but you still need to invest in the electronics, and the extruder, and the motors, etc. To be fair, you can bring down the cost by making a number of parts by yourself, but the learning curve on this is non-trivial, and the level of effort is significant (you do come out at the end with a new skill set, and one that will likely be marketable in the future but that isn't my point). At the end of the day you either need disposable income, a lot of time, or a business plan in order to make a bunch of 3-D printers using 3-D printers.

I gotta point out that if anyone were to place any kind of high velocity projectile within 17 feet of my head from multiple miles away, I'd probably interpret that as "directly at" me, if not necessarily "at arms length".

You symbiotic patriotic slam, but neck, right? Right. oooor... You symbiotic patriotic slam the net, right? Right.