The ability to tell true stories has played an undeniably important role in the development of mankind. Before humans could express themselves in writing, telling short stories with moral components was the only way they could share experiences and lessons learned.
By telling stories our ancestors told their children how to survive the harsh conditions they lived in, and by telling stories people could share their knowledge to others so their lessons learned did not die with the narrator. It is not for nothing that our brain is more capable of remembering things when they are related to a story. Trying to remember more than seven random items is a harsh task for most of us, but if someone tells you a story with more than seven items in it, it suddenly gets much easier to remember them. Incidentally, the same positive effect can be reached by using music in a similar fashion.