Where Mr. Griffin would have built his space station?
In the Antarctic, on the moon or on Mars?
For nearly all low gravity experiments you need a station in space and not on moon. To gather experience for long term missions in space a space station is much cheaper and saver.
The goal why America went to moon in 1969 was always clear. It was not a scientific mission it was just a way to show your muscles to the Russians.
But today I am not quite sure about the aim going back to moon. As training for a mission to mars? Just to be there? Well, there is still something on Mars
http://marsrovers.jpl.nasa.gov/home/index.html
For nearly all low gravity experiments you need a station in space and not on moon. Some experiments can be done on parabolic flights using regular aircraft (the Vomit Comet). Longer duration experiments can be done on automated, unmanned spacecraft. We already have information for long duration manned spaceflight. We don't need to keep repeating it over and over again.