Did you know? We've had humans in space now continuously for fourteen years, ever since November 2000, when the International Space Stations was first occupied. The Atlantic has a great article about how this came to pass.
The article includes some great pictures of the ISS:
The ISS costs as much to run as a carrier battle group. In the long run, it's a most worthwhile investment. In 200 years, who will care about a carrier battle group (or even know what they were?) But space stations might be our lifeline to the universe.