Why some people constantly talk about the past?

Well, hopefully its for pleasant memories and for those that do not have camera's or photo's get destroyed, reminiscing is the only way to go back to that time and place that brought warmth and love to your heart and those involved in the moment. Could be any reason. They're mostly due to some experience from the past and some of them have a good or bad affection on that person. They play a major role in our lives.

Mac