It's a very small and select slice of all the people who have ever been born. I believe we've come back during this time, those of us who are here now, specifically to experience it. And to cause a 'quickening of the spirit.'
Alas, poor Yo rick. I knew him, Horatio a fellow of infinite jest, of most excellent fancy. He hath borne me on his back a thousand times; and now, how abhorred my imagination is! My gorge rises at it.