I agree with so many on this thread about not having asked enough questions! And, for basically not being terribly interested in much of it. What I did do as a child was listen to my mother, her mother and my great aunt talking about the family and folk that they knew. I remember thinking, at one time, that George Formby was one of the family! They used to talk about him as if he was a family member and spoke about how his wife was horrible to him... that was about 50+ years ago now and everyone has died. I remember my grandmother taught me a song that she'd learned at school... I taught the song to my children but have always forgotten to ask if they taught it to their own children...and now I have a great granddaughter... so I must teach it to her, too.
But I was also thinking that folk have wondered about documents having been tossed out... but I'm also thinking that there are letters and documents that WE have that should be put away with our research papers. I've got a postcard sent by my father to his parents from a Luft Stalag when he was a POW, a letter written by my grandmother's friend, who mentions my 'fat faced' mother (when she was a little girl with a round face) regarding a visit from a Salvation Army friend and an old insurance policy taken out by my grandmother on my mother when she was a little girl (in the 1920s)... it's enormous and incredibly ornate.
However, and this is very precious because it's so detailed... my father wrote his memoirs for the family. He split them up into his early life, his war years and his post-war years when he was in the police. Sadly, he never managed to finish the final section. However, the section on the war I've had published and the earlier section, mainly about his time in Carlisle (although there is some about when they moved back to Maidstone where he was born) I've sent to his old school in Carlisle as a piece of history of life back then. The section on the police I've sent to Manchester Police Museum to put into their archives... again to pad out their historical information. So... not only do we have these things... but others are able to read them should they wish to do so.
Finally... we must remember that we, too, are going to be important to our descendants. We should be writing about ourselves, too...no matter how boring we may feel that to be. We have so many photos nowadays of ourselves... but it's the stories behind the photos, behind the house moves, behind the holidays, behind the events of our day to day lives that will surely enthrall them! We who are so corporeal now, so sure of our allotted span on this earth... will one day be just a memory and later on... not even that if we don't say who we are.... and call to them down the years.