The show was never "about" the island. Figuring out "what it all means" never was the point.
Right which is why I was very frustrated after watching the ending last night. I spent the last 6 years trying to figure out the island. I do think the island was some sort of mystic porthole to the great beyond and that when Des pulled the cork, he opened the "gates of hell". Smokey wanted to destroy everything not because he was pure evil but because he couldn't accept his fate. Yet, the cork getting pulled allowed Smokey to actually regain his human side. Richard as well. I thought it was interesting when Miles pulled out the gray hair that Richard was so excited that he could age and now actually wanted to live!!
hemplover - thanks for posting that blog. Very interesting take.
I would have been happier since I'm more a "man of science" as opposed to a "man of faith" with an explaination of exactly what the island was, why it was there, and what purpose Whitmore wanted it for. But, the character story of redemption leaves you with a good feeling and I guess I'm ok with that.
BTW - I thought the sideways reality being limbo was actually a great stroke. We saw the island at the bottom of the ocean at the beginning of this season which started the sideways reality. All the passenger's desires in this reality were met although not perfectly. This limbo allowed the characters go come to grips with what happened each in their own time.