Here's what I think:

The whole story....everything.....LOST is about Jack Shepard. From the initial plane crash to life on the island and everything they went through, the sideways world, the heart of the island, everything. The story was about Jack's journey from a man of science (which is why early on in the show we see a lot more of the sci-fi stuff) to a man of faith (ie his "letting go"). We see all of the spiritual stuff this last season because that is a reflection of Jack's heart/attitude.

The reason we don't get answers to every little detail is because the whole point of the show is to tell Jack Shepard's story. We did get all the answers from this standpoint IMO.

All that took place throughout the course of the show was necessary in order for Jack to get to a place where he was ready to "go on".

I agree the island was real and the sideways world was some sort of pergatory, Jack died in the bamboo field after saving the island.

Everybody dies, the show was just a picture of a higher power working many things together to change Jack's heart to have faith and be ready.

Just my thoughts....

And here is something Daniel Dae Kim (Jin) posted on his FB wall:


Lost explained