 What motivated the leprechauns to build a spaceship?
But its small, mischievous pilots had a rendezvous with destiny—on Earth. I had seen them first as a boy of eight, and then, very briefly again, on my tenth birthday. Or so the legends affirmed, though I've wondered often about the truth of them. Of course it was a spaceship, or a miniature replica of one. So I stepped back to the tiny spaceship, and this time I struck it a resounding blow with my fist. "Why," I asked, "would a group of little people be building a spaceship here in America—out in this lonely place?"
 They believe that humans' obsession with technology will make the world inhabitable
 They desire to seek and add more riches to their already expansive collection  They believe that humans' obsession with technology will make the world inhabitable  They fear that their race will soon become extinct due to population decline  They wish to transport their riches to another location where humans will never steal it