I would submit that there are as many unanswered questions about BSG as there were in Lost, and that the core mystery was explained just as well in Lost as it was in BSG. And also that the central conflict in Lost was completely resolved.
There's a very great deal we know about the island now. We may not know ultimately why, but then, we don't know why "god" is continually running the same experiment over and over in the BSG universe, either.
There's a very great deal we know about the island now. We may not know ultimately why, but then, we don't know why "god" is continually running the same experiment over and over in the BSG universe, either.