I find that I sometimes miss people that are no longer in my life.  Through death, distance, busy-ness, and misunderstanding they are gone or rarely seen.  There will be times when I see, hear, think, experience something that will bring a specific person to mind that will have been interested in, given feed back on, or enjoyed what was on my mind to share.  Then comes that moment when I realize that they aren’t available any more, and I miss them.  Everybody brings different things to a friendship.  People flow through our lives as we flow through theirs.  New friends don’t replace the ones that are gone.  They bring something unique to the acquaintance.  The shoes that are empty remain empty.