1) If we are indeed to build a base on the Moon, the presence of water already there would offer a tremendous advantage in building and running it. This can be very important to colonize the Moon.
2) An Ancient Jewish legend: Legend tells that, if in the moonlight of Hoshana Rabbah, on the seventh day of the Sukkot, an individual casts no visible shadow from their forehead upon the Earth, then it is their destiny to die during the approaching year.
3) Apollo 7, launched on October 11, 1968 was the first manned mission in the Apollo program. It was an eleven-day Earth-orbital mission intended to test the redesigned command module. Between December 21, 1968 and May 18, 1969, NASA launched three Apollo missions (8, 9, and 10) using the Saturn V launch vehicle. Each mission had a crew of three astronauts, and the last two included Lunar Modules, but none of these were intended as Moon landing missions. The next two flights (11 and 12) included successful Moon landings. The Apollo 13 mission was aborted before the landing attempt, but the crew returned safely to Earth. The four subsequent Apollo missions (14 through 17) included successful Moon landings. The last three of these were J-class missions that included the use of Lunar Rovers. Apollo 17 launched December 7, 1972 and was the last Apollo mission to the moon. Mission commander Eugene Cernan was the last person to leave the Moon's surface. The crew returned safely to Earth on December 19, 1972.
4) We can locate potential and new resources, characterize the radiation environment and test new technology.