People are afraid of the unknown so they build elaborate fictions to explain the unknown then they band together to fortify those beliefs through numbers. If you attack that, all the fear of the unknown threatens to boil to the surface and that's just too big a "cross to bear" for most people.
The fact is if you take anyone and preach a fairy tale to them from birth, they are going to be hard wired to believe it. If these same people were told from birth about a six headed hermaphrodite unicorn god, they would be arguing just as vehemently for that right now.
"In reality, the Constitution itself is incapable of achieving what we would like in limiting government power, no matter how well written."
~ Ron Paul, End the Fed