People fear alternate view points because it's human nature to "go with the group." We're social animals. If the tribe wants to go north and you want to go south, well you better go with the tribe or you'll be on your own. But now, there is no tribe. There are only these big giant ideas. And most people would rather go with what is known than what is not.

Look at history. It's all over. They say she's a witch, let's burn her! She uses magic! (herbs) and cures people! Witch! But I am sick, I will go pray and have the priest bless me (acceptable.) Hmmmm... Now it's the other way. Take this medicine, but don't pray/meditate on it. We need both.