Clearly there is more than one way to skin a cat and there is research that can be done away from work that cannot be done here. The benefits that could come from a low-gravity, non-atmospheric research facility are not about ‘collecting moon rocks’ there would be benefits in, for example, the Search for Extra-Terrestrial Intelligence (SETI) would benefit greatly from small radio telescopes based away from the distractions and interferences based on Earth [i] . As has been shown by the International Space Station, there is useful medical research that can be conducted in low or zero gravity, notably research based on aging.  [i] "Why Go Back to the Moon?" NASA. January 14, 2008