Ok this has been an issue in my life way too long for me to not share it. There are so many people in our lives that we meet. Some hang around for relatively long periods. I have sections of my life I refer to (in my own thoughts) as Era's. Kinda like the dinosaurs and the wooly mammoth's and cro-magnon or neanderthal man. Some overlapped with the other but all contained people with whom I associated with. For instance, I had some friends in the neighborhood, a few of them I went to school with. As I grew older, some from the neighborhood dropped off and went in another direction with their social and scholastic life. I lost contact. Nothing bad. It wasn't like I stopped answering the door or they stopped picking up the phone when I called. It was just a natural thing as our lives evolved. Fortunately for me, my memory is pretty good relatively speaking and I can ressurect entire events that go back almost to the age of four with friends I had and have.