Following up on the previous post about belief in science, here's an interesting article about why some folks "don't believe in science". Basically, it's all about how and what we learn as children and what is (or isn't) reinforced by our parents and immediate cultural surroundings. To be overly crude and simplistic: Ignorant people breed ignorance.
BTW, my favorite line from the article:
All other things being equal, a rational person is wise to defer to a geologist about the age of the earth rather than to a priest or to a politician.