Sepia Scenes: Old Photos

I think it's kinda sad when I see someone's old family photos for sale in an antique store/mall. I wonder who these people were, and why their family chose to give the pictures to a store to sell to strangers? Maybe there's no family left; the person was the last of their line, so the estate was distributed by an attorney or maybe a friend who had no emotional ties to the family or memories of the people in the photos. Whatever the case, it's sad.