ok so i thought about the ending last night. EVERYONE did. i could barely sleep. but in the end i think that everyone was already dead from the start. aznd they were like ghosts, needing to "let go". you know how some people, there spirits can't leave yet, they need to do something before they leave. they all had to meet, and they had to "leave". i think that the island was infact like a hell, and that jacob and MIB were god and the devil, and their mother was like mother earth. althought i was kinda pissed that alot of stuff wasn't answered, especially Walt's specialty. we knew he was special, but they never really explained it.
i also think that maybe the producers were sick of all the questions that fans had, and they just ended it like that, with everybody "letting go" and "leaving". myabe that's what they wanted fans to do. its over, you have to let go of this show.
all in all, i think that it was a pretty good ending, it just took people a while to realize what the F just happened. i definitely think that this series will be one to remember, somthing that teens today grew up with. like M*A*S*H, it was a finale to remember, hopefully Lost willo be the same.