When a rocket ship explodes
But everybody still wants to fly?
This lyric has always stuck in my head, because it doesn't make any sense. The approach that Prince is tacitly advocating here to safety standards in space exploration is far too conservative. You don't give up on the whole programme just because of one very bad accident. You investigate, fix, improve and move on.
Edit: I hope it was obvious that this was tongue in cheek, but thanks for the actually quite interesting responses