Atheists are often accused of being too outspoken, too militant, to strident. Our mere presence in society offends many people, all of them religious in one way or the other. Our existence is a reminder that the religious worldview is not the only one, that there is some possibility that they might be wrong about their beliefs in the supernatural, which beliefs forms a major component of how they deal with the day to day exigencies of life. We’re simply telling them that their beliefs, their vision of reality, could be wrong. Since there is an underlying current of insecurity in those beliefs, we make them nervous.