Could you immagine being so old that your greatⁿ grandchildren would be so loosely related to you that you might as well be a stranger? So old that your family doesn't have records connecting them back to you? Of course, you'd get to see countries rise and fall (maybe even play key roles in both events if you play your cards right), You could learn more than you've ever imagined you could, do things that seem impossible by today's standards, but you'd have no family to share it with, you're siblings would have all died centuries ago, your family may have faded into obscurity, but you would be able to do anything, because you'd have all the time in the world to learn how.