Just the word itself brings to mind images of old men with wrinkled faces, white hair, and a stained beard. Maybe your image has the old man sitting on the front porch of an old, tar-paper house smoking a pipe and gazing into the distant sunset. Perhaps Grandfather brings to your mind a young Native American sitting at the feet of one of the ancient tribe members listing to a tale of history.
As a small child, I never dreamed of one day being a Grandfather. Now I am one. I just hope I can live up to the name.