This group of questions shows quite a stark difference. While a majority of us do have other non-christians or ex-christians in our lives, a substantial minority seem to be surrounded by christians, most of them probably in the American south where, from what I read on this subreddit, Christianity is everywhere. That makes exchristian very important as a support subreddit, which I've seen others say here and have felt myself. This community is a very important resource for many people.