How about:


Nasa lost the moon and the money to fund the landings in a poker match with Russia so it seemed pointless to go there.


Native Moonites, who were acutally called flower children on earth, warned that they would take over the government if anyone attempted to land on their home planet.


The CIA needed the funds the moon landings were raise to spy on their favorite swedish stars.


Isaac Asimov wrote the book about the moon landings. NASA liked it so much they stole it and made it into a movie, but the movie was not as good as the book.