If "family" is a small clan related by blood, then the stories family members tell and remember about one another become their cultural history. Family anecdotes often fade over time, and after three or four generations, the details can be lost unless some enterprising family historian rescues them from obscurity.
While it's making the rounds at your annual family reunion, enjoy the retelling of Uncle Wilbur's exploits during the Great War. One day the storytellers at the "old folks" table will be gone, and it'll be up to you to carry the tales of your collective family history to new generations. Being the historian of your clan has its advantages: Part of you will live forever.