And what did we learn because of this little excursion?

We learned what the Lady of Lies is really after. What the chip is on Azzy's shoulder. We learned what happens to transferred idols. And about important players that we had no way of even knowing about before. And about fallen angels.

Was the ending fucked up?

Obviously.

But your angel friend made a choice, as we all did. And now we all have to live with the consequences.

If we weren't willing to accept them in the first place, then we had no business doing what we did.