People bang on about the cost of space exploration. However human exploration is a fantastic motivational force and goal for science. It provides an ambition and stretches the boundaries of our understanding.
The huge cost, ends on being passed back in time because of the discoveries and advancements that are made as a result which often have very practical applications in every day life in even the most dull situation.
This has been proven time and time again through our history. I think in many respects we can't afford to stop exploring the universe and during that process the limits of abilities.
As Edmund Hilary once said "It is not the mountain we conquer, but ourselves".
'Inspiring' is the word I'd use about this. We could do with a little of that in the world of science.