In some ways we are no further ahead of our ancestors who thought the world was ending because an eclipse took place. It was an omen. Todat, we have become aware through science that we actually could be wiped out either by chance (comet/meteor strike) or our own screw ups (pollution, starvation, war). We have grown in our understanding of how things work, but we have not grown at all in establishing any reason why things work at very basic levels. Eventually we get to the question of 'what causes life' or 'how can something so complex possibly exist'? And there we run into the wall. For all our sophistication, we have no answer.