A major feature of the analysis of the Apollo missions, is the constant lament that we’ve never gone back to The Moon, or (and this is Buzz Aldrin’s formulation) that we haven’t reached Mars.
However, I wonder if this is fair? If we consider other great exploratory feats, such as Columbus crossing the Atlantic, or Magellan circumnavigating the globe, or Hillary/Tenzing climbing Everest… how long before the extraordinary was repeated? How long before it became commonplace?