I know I was pretty disappointed in the ending as well. I was really hoping it would explain the island .
There were so many things wrong with the final episode:
- as someone mentioned, Ben stuck under a log too heavy to lift, then suddenly getting out
- Jack in the "heart" of the island, then the next scene lying on a rock on the surface
- Kate suddenly changing her clothes in the final scene
There were others that I can't remember just now.
Not worth getting up at 5am for.