The Moon certainly wasn't low-hanging fruit 50 years ago. It is today.
The Voyager missions were/are awesome. Sad you find them worthless.
What took what whom so long? Cassini-Huygens, a NASA/ESA collaboration, didn't get launched until 1997.
And what giants are you talking about? Wernher von Braun? NASA? Are you talking about the US? I am talking about the UK vs ESA.
Be precise, anonymous coward.