Apollo 11 was the first moon landing. When Apollo 13 launched people were already bored with sending men to the moon. By the time Apollo 17 made the final moon landing in December of 1972 there was little public interest in going to the moon. In fact there was little interest in the space program at all. It was considered a waste of money. NASA then turned its attention to developing a reusable spacecraft, which they did... the shuttle. Now of course that program's future is in doubt and you'll probably see no manned space flights made by the U.S. until a new launch vehicle is designed, with the exception of us hitching rides in Russian spacecraft up to the space station. There is really no reason for manned landings on the moon any longer. Next stop for Man is Mars. And I imagine we'll be continuing to send unmanned probes to Mars for a very long time before sending men there simple because it's cheaper to send probes.