The entire episode was centered around the idea of love and trust. Each character has expressed love for someone or something: Jack and Kate, Sawyer and Juliette, Locke and the island, etc. Even more important is the love each character has had after the death one of the characters: again, Sawyer and Juliette.
There is a scene at the end of the finale where Jack meets his father once again, but this time not on the island. They have an incredibly ambiguous discussion that basically tells the audience and all LOST fans: this doesn't make sense and never will. Jack says: "How are you here right now?" and his father responds "How are you here?" And they pretty much say that you're alive and dead and have been.
In the final act, when on the island, Jack saved the island from beind destroyed and died doing so. Hurley and Ben were left on the island to take care of it. Kate, Sawyer, Claire and the rest of the gang made it off the island and back to "reality" (whatever that is).
My biggest problem with the finale was the religious undertone at the end. Someone said to me, after complaining about this randomness, that LOST has always been about faith but I disagree. LOST has always been about trust - characters constantly tell each other "You just have to trust me." I feel that this religious message at the end was quite random and inappropriate. What do you think? Did you enjoy the finale? Leave your comments so we can have a dicussion!