I am an atheist. But I don't speak about my beliefs to anyone unless they express an interest. My sister-in-law is a Catholic Nun, and a wonderful and very thoughtful person. I don't challenge her beliefs and she doesn't challenge mine. There are plenty of other things to talk about. It is my notion that people who are determined to proselytize their belief are somewhat insecure with those beliefs, so they are constantly looking for agreement from others to aswage their discomfort.