If you were one of the astronauts to walk on the moon. Seriously, what else could ever live up to that at this point in human history. There have been only 12 people to walk on the moon. Doesn't matter what anyone else has done, those 12 astronauts could look anyone in the eye and say "Yeah... no... I've walked on the fucking MOON. THE. FUCKING. MOON.... what have you done?".
John Young did a pretty good job of further career accomplishments after walking on the moon on Apollo 16. Two space shuttle missions as commander. Including the very first.
He Hello, moonbase Gingrich means you live on the moon in a republican fascist paradise paid for by the poor and built by the lowest bidder with junk bonds issued by Donald trump. What would beat that? Maybe Nazis from the dark side of the moon.
One of the shrinking number of real Moon-walkers, Buzz Aldrin, was admitted to a psychiatric hospital within months of returning from (according to Micheal Collins in his fine book Carrying the fire). So it wasn't good for everybody. Anyway, I doubt Buzz was all that stable to begin with.
Walking on the moon is great and all, but I would dispute it being among the very greatest achievements. The work of Einstein, to give one example, is much more valuable.
Well, if you believe the latest episode of Colony, they found some serious shit on the dark side of the moon!