Actually the rise and decline of ancient civilizations often led to the attribution of heroic qualities to those that came before, especially when the earlier generation had built structures and the knowhow forgotten. In the Iliad you see the warriors raise huge stones "such as ten men could not lift today, men such as they are now." It was assumed that they had to have been stronger to build the buildings they made. So it has been fairly common to attribute fantastic things to non-human agency, which we have also seen in recent theories of "alien construction" of the pyramids--though a French architect has recently proven it would take only 4,000 people to build a pyramid in a few years (was on MSN news on the web for quite some time).
The other side of your question has to do with the U.S. and here the situation is pretty dismal. Hofstadter's Anti-Intellectualism in American Life is excellent and is as relevant today as when it was written (c. 1960).
The moon hoax theory's popularity is a direct result of the FOX film on the topic which continues to circulate in DVD form. FOX is the news station of (a) people that don't read and (b) people that vote Republican. Serious conservatives don't watch FOX. They read the Wall Street Journal. FOX is for the masses, and the theory that anything goes to get ratings is OK, and is certainly tolerated as giving the public "what it wants." In any case it's the masses that we get here, not the readers of the Wall Street Journal.
What makes me despondent about it is that the American moon program was our most outstanding civilizational achievement. The remains of the moon program will be on the moon long after all our problems and political disagreements are dust. Even when the metal in the moon landers turns to slag as the sun expands into its final phases, the pure artificial metal compound will still be proof that once there was a great nation that had brilliant people, and brave people, who did an immense thing that shows how powerful a force life can be. The moon program is our pyramids, our cathedrals.
So these people who believe these theories will lead impoverished lives where the full potential of what it is to be human will not be known. They could be out using telescopes and gazing at the heavens. They could be out fishing. They could be reading a book. They coudl be doing anything. Instead they are taking in FOX's latest merchandising technique for selling prime time ad spaces to the makers of toothpaste and car insurance.
And that's the way it is.....but do pick up Hoftstadter's book. Reading it is like therapy.
GN