@Advocate,
I'd say you have a pretty good grasp of where we are at economically. However, I would challenge your impressions about "we don't make anything to speak of" as an unfounded opinion. Look at the high tech industry, and see that our country was the impetus for it, and still manage to create commerce where none existed only a few decades ago. We are now in the information age, and it gets ever cheaper to increase our ability to communicate in many different modes including cell phones and our computers. Cars get more sophisticated with more computing systems with navigation tools.
Intel just came out with a new chip with unheard of memory capacity that can be used in many different kinds of communication systems.
What we humans have to do is to increase fuel efficiency and increase energy sources; there are many aspects to increasing our standard of living with new technology and tools.
To think that the last century of a 4.5 billion year old planet has brought so much advances in medicine, transportation and communication, I'm sure we're just on "the cutting edge" of things to come.