A sense of nostalgia? A sense of what might have been? A sense of missed opportunities? No matter how wonderful and interesting our lives have been, once we get into the later years, there's something beguiling about first loves and class reunions.
Nowhere in science is the "survivorship bias" as well demonstrated as the class reunion.Where are the people who failed economically, professionally, socially, romantically and physically? They don't show up!