The most troubling thing for me was the shot of the wrecakage on the beach during the credits. Did this mean they all died at the initial crash, and the island was a pre-purgatory where they needed to find redemption before they could find purgatory where they find each other to go onto whatever is next? If so, then nothing about the plot ever mattered, I would be unhappy with this. For whatever reason, I am more comfortable believing that Jack actually saved the world and Hurley was the new Jacob for years, etc - basically that what they went through on the island had a larger purpose than just individual redemption. But then why show that wreckage? Argh.