You ending on a very positive note is kind of surprising to me and doesn’t fit the intro. How does it matter „you only get one chance to do it right“ if nothing of it will endure anyway? Even if you had a thousand chances, the outcome would not change. Not saying you’re wrong, but there’s a disconnect for me between your starting point and the end of your argument. You start with doomsday and end on a motivational TED talk message.