The Opera scene was the confirmation of predestination as it relates between key people. It's the mystic bull**** I was referring to. It was meant to show how it's all been already set in stone, and the actors were just playing their parts faithfully, or to put it better, "how it all comes true in the end".
I think most of us wanted all that stuff to be more and have a better meaning, but it just wasn't. And that's fine, I mean, considering our entire species practices mass delusion in fantastic numbers on a daily basis, it's not like the show was catering that aspect to me, or people like me. A lot of the final episode, and Galactica in general now that we can look at it as a whole, was meant to straddle the line, entertain all sorts of people who believe or don't believe in things.
Just have to accept some things are not FOR you. At least, these aspects of the show were not for me. I can't speak for any of you.