Wow, these threads and videos linking to that same site... that's all you? You are Capricorn, all organization and business. Impressive. And the artistic presentation, lots of heart and soul went into all that I see.
Regarding purpose: Why do we incarnate? To find a purpose, something to do? Or to learn that being conscious and conscientious is the purpose? Just a thought, and in fact age may play into that. The drive to be something in life wanes as one grows older. That said, I'm not sure sure I'd ever say knowing your life purpose is crucial. There is purpose enough in just living a joyful existence.