We have to get off this rock
I've upvoted a couple of earlier posters (Dan Paul and Ben Holmes) because I agree with their sentiments.
Where Dan's point is concerned, I'm with Stephen Hawking, who said "I don't think the human race will survive the next thousand years, unless we spread into space". If we haven't left Earth in significant numbers before then, then the human race will be blasted back to the Stone Age. Look at the Shoemaker-Levy comet impact on Jupiter. That's a near miss in spatial terms. If it had hit the mid-Atlantic, where would we be?
Ben's point is the main problem:
"An[d] so the endless cycle of underfunded grandstand projects such as SLS continue, whilst NASA slips further and further into obscurity."
The technology, the brains and the desire (Elon Musk and even Richard Branson) either exists or is on the drawing board right now. What we (as a species) lack is the political will to make it happen.
Heck. Rant over.