How many people take the battery out of the aircraft before charging?

I leave the battery in the airplane or helo because I have one battery per craft and take multiple craft to fly. I charge usually on the way home with the craft next to me on the passenger seat or before I leave either atop my flight box or in my car down in the parking lot unattended. I think that most of the fear is from a paranoia caused when lithiums first came out and people were not charging them right or from damaged/ misused batteries.