I watched. I was sorta under-whelmed by how it ended. Many (self included) have been saying from the end of the 1st season that the big secret was that they were all already dead.
I'm disappointed that they didn't resolve Michael or Walt. Unless I missed something they weren't in the room at the end.
And I still wanna know where that polar bear came from 
Most people have come to the conclusion that, at the end, they were all dead. Some died on the island. Some died later, and made it off the island. They finally came together in a "fake" world, dead, which was the whole 6th season, I think; and had to "remember" each other. Once they did that, then they went to the church, and crossed over into the light.
