You are a miracle of clue-lessness when it comes to discourse on any level other than detailed reviews of your theorizing, which could not be considered peer reviews as most PhD's demand to be considered valid.
So, you know why the dinosaurs disappeared, or you BELIEVE you know why the dinosaurs disappeared? Which is it, professor?
Back to the question that should be simple for one who has contemplated the beginnings, the middles, and the ends of the universe, and laid it all out in his mind: what is the meaning of life? Surely on your searches for truth and light you have discovered the answer.
We await the sharing of your received knowledge.