I wouldn’t talk about atheism with loved ones, whom I thought that it would cause distress. But I enjoy talking about it with acquaintances who I deem emotionally and intellectually able to deal with it. The problem is that I am rarely around such persons who are, also, willing to engage on the topic. (I assume they find it threatening or too conflicting. But then a lot of people just don’t want to think about anything to do with religion at all.)