If the Europeans paid for the defense that we have covered since WWII they would not have the life style they (well, some) have now. Those days are over, and now, you will be carrying your load. America's shift to the China seas is to protect our Pacific interests. Time for Europe to pick up it's slack defense spending, or you will all be speaking Russian. Personally, I do not believe Europe could defend itself from itself. I think that's why England is "Brexiting". I hope I am wrong.
Also, America is a vast large country, much larger and different in all it parts. What I have in my Barn is more than anyone I know has. I could easily make 3D printers of various kinds, from additive, to Laser, but finding like minded people is another story, and everyone wants something for nothing. That's a problem in the U.S.. In some places anyways. I live in an upscale town. I am probably the poorest person in this town. Yet, I have neighbors with $100,000 dollar cars who ask me to fix their tractors, or even look at their cars, or help them with their plumbing, electric wiring, or even carpentry work. I just say, hire someone licensed in it. They know I can do virtually anything I put my mind for, yet they expect this for free. Trying to set up a community of people sharing delicate equipment that requires maintenance would be a nightmare. I talked my town into getting 3D printers for all the schools. They actually have and many teachers, I did not know, pulled me aside in the grocery store, as their kids pointed me out, saying that's Johnny's father, he got the 3D printers put in the schools. This town had full machine shops in the High School, with machines that easily could have been converted to CNC machines, they sold them for their scrap value. They were virtually untouched. After all, who would want to see their child do manual labor. No, we are not all rich in the U.S., but many holding the money reigns are and they make it harder and harder for those who are the backbone of this country. We are an industrious group though, and that's been proved over and over.
Trump is a jerk, just in case. I felt I needed to express that. Hillary was too. These are the choices we are given, they are the same people, the flip sides of the same coins, elitist.