So what does all of this mean for space travel? Clearly, the American space program of the sixties was part of the larger Cold War. While Kennedy and his successors painted a lot of rhetoric on why we went into orbit or to the moon, the real reason was simply, and always, to beat the Russkies. Regardless of the hopes and dreams of the scientists and engineers working for NASA and the aerospace industry, they were engaged in the same kind of contest as Royal Navy Admiral Jackie Fisher had with his dreadnoughts sixty years earlier.
Once Cold War political realities rendered the space race superfluous, it was promptly jettisoned. Of course, no bureaucracy ever truly dies; so NASA fought tenaciously to salvage some of its budget, and to come up with reasons for its continued existence. On their reduced budget, they achieved some rather remarkable things. What did they accomplish after the feverish race for the moon was over? Deep space robotic exploration and the shuttle/space station programs.
As we mentioned, exploration is cheap. For chump change in government revenue terms, we could toss out a Pioneer, Voyager, Pathfinder or Galileo probe every year for eternity and not feel the bite. And, like early sailing ship explorations they brought back fabulous images, scientific information, and a sense that we were engaging in something important.
The Space Shuttle Program is a technological marvel, to be sure. But it is simultaneously a ridiculous compromise, a kludged up rube-goldbergesque vehicle that tries to be everything to everyone, while actually pleasing no one. So, the Space Shuttle is a shuttle. OK, fine, but don't shuttles shuttle back and forth between things? Oh yeah, well, we're building a space station for the shuttle to fly to. What does the Space Station do? Well, all kinds of nifty research, and it will embarrass the hell out of the commies. Didn't the Soviet Union collapse? Oh.
When you recall that the International Space Station, built with the help of every country in the world but North Korea, and cost two hundred trillion dollars because it was redesigned 8,000 times over twenty years, and in any event is smaller than the space station we let burn up and that was built out of spare parts left over from Apollo, having a shuttle to go to it doesn't seem so cool anymore. And then, after two tragic (not in the sense of aw, that's sad but in the original sense of inevitable doom) accidents, we don't even have a shuttle anymore.
The Shuttle and ISS are the result of bureaucratic inertia, and the fact that the U.S. Government has an obscene amount of money. The exploratory probes are a result of the fact that NASA, in its spare time, is a jobs program for scientists, and the fact that the U.S. Government has an obscene amount of money.
We should not be surprised that we do not have a space program, or at least a space program that space advocates would proudly call their own. There is absolutely no political reason to have one. The two reasons that governments fund anything beyond exploration of the most cursory nature is strategic competition with rival powers, or to gain control of vital resources or trade.
But, the United States has no rivals, for we are a solitary superpower. We do not need to beat anyone to anywhere. The only possible rival is China, but this is not going to happen in the near term. There are no easily accessible resources in space. Most of space is, well, space. There is not only no "Gold in them thar hills," there mostly isn't really even a there there. The closest real estate to Earth, our Moon, is covered in Aluminum and Silicon based dirt. Aluminum and Silicon are hardly the most valuable of mineral resources on Earth. Add to that the fact that we would have to transport not merely miners and tools, but every drop of water, breath of air and crumb of food that the miners would consume during their entire Lunar sojourn, this becomes a undesirable investment option for government. Any other usable real estate is even further away.
And, there are no friendly aliens to go out and trade with either, despite the fervent beliefs of many in this country.
The final reason the government might agree to allow large scale efforts to colonize space doesn't apply to the United States either. By and large we are a fat, happy, prosperous people, and have no desire to move elsewhere. We've got it as good as any nation in the history of the world, so why should anyone want to leave? There are no Puritans, no Huguenots suffering from religious oppression, and even when things were much worse for blacks in this country, even when there was still slavery, they didn't want to go to Liberia.
The only way that the U.S. Government will pay for a large scale space program in the absence of traditional motivations, is if we become so fantastically wealthy that a hundred billion dollars is pocket change..