Question

I’m not sure you’ll have an answer on this topic, but I chose to ask anyway.
I don’t have much to add beyond the title….
I believe that as a person of faith I have some kind of role in the world that I’m supposed to fulfill (especially if I believe that the hand of God is involved in creation, even if we set aside individual providence for a moment), and I’m trying to understand where that message is hidden.
Swaying three times a day in front of a prayer stand and mumbling words doesn’t feel like an exalted purpose to me (work doesn’t help with this; it’s a natural burnout that many people have, though only a small number admit it).
Am I supposed to understand it from my own traits? Or is there no such understanding at all, and only after death will I discover what the purpose was for which we were meant? Or is there no purpose at all? 
These questions grow stronger and make things harder for me in light of your “thin theology” approach. Learning loses most of its flavor, because it could be that the Sages got confused (most likely not only in matters of science and biotechnology, but even in Jewish law, reasoning, and legal rulings…). Prayer probably doesn’t help, and we do it only because we can’t rule out the possibility that it helps in some way…
That means even the generic, everyday purpose has lost some of its value. So what is left for us from all of the service of God?