Amen
By a lot of people, the bible is considered not important, just a fantasy. So why was it so important to be translated, copied, and is found in every book store, library, etc? If it's not important, why go through all the trouble to have it in every country?
Marketing. You cannot get business if you do not advertise.
Just because an idea is popular does not make it correct though it is a tendency of humans to assert this notion in their daily lives. In fact, that an idea which is of dubious quality is held for emotional reasons the application of repetition helps to suppress any attempts at criticism.