An interesting habit I have noticed in several small towns here is to keep the door of a church wide open during services. Maybe it is done in other places but as I have never been to a regular church service, I couldn't tell, I just happened to notice it here. Obviously, I am now wondering why they do that: to share the service with everybody? to provide an obvious emergency exit if something goes wrong? to attract new souls? Apologies if I have offended any church going person, I am just being curious.