Kramodlog
Naked and living in a barrel
Umm... yes it was.That was it, and no, it wasn't.
Umm... yes it was.That was it, and no, it wasn't.
Up until the last minutes of the finale, every single religious thing that happened in the show could have been explained as a coincidence or with science and technology. Then "Surprise, it was God after all, and the Cylon religion was right!" didn't feel like as much of an answer as a cop out.
The mystical/religious angle was always in the series as something some of the characters believed, but it wasn't until the last season, and Starbuck's return, that it became something that was presented as actually real - and even then they tried to keep the viewers guessing, and there were potentially other explanations.
In the end, it comes down to the same problem as the ending of Lost - you've presented the viewers with a mystery, a puzzle with a lot of possible answers and a scattering of clues, and positively encouraged them to keep guessing and speculating. If you then finish the series by presenting them with the answer "a god did it", then you're short-changing them, because an answer that comes from outside the established context of both the series and the real world is essentially unguessable and renders all the prior speculation meaningless.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.