The interesting thing to me is how close in age a lot of the icons from that period in history were up through the 80s.
Age today (if they were all still alive)
JFK - 100
Reagan- 107
Nixon - 105
Ford - 105
Kissinger - 95
Carter - 94
Over 40 years of the nations history significantly affected by a group of men separated in age by only by about a dozen years. All these men grew up in the 1920s and 30s.