This was truly a wonderful (and staggeringly misunderstood) finale to an amazing television series. The metaphysical elements to the story may have put off those who haven't been paying attention to them these last four years, but for me there was no other way to address them but then to... address them as the obvious supernatural elements they were. The ending was mysterious, marvelous, and came off as though the universe breathed a great sigh of relief.
I laughed, I was excited, and I was in tears. I cannot believe the hateful and horrible things I've read from people about this episode. It was a perfect wrap up - probably one of the best series finales in TV history.