My view on the series (Possible Spoilers)
Firstly, i wrote possible spoilers because this is my first post and i’m not sure on the spoiler policy, if someone could inform me i would be grateful.
Secondly, my theory may be identical or at least similar to another on this site, but since i am new i havent read all the theories and wouldnt know if i sound like a sheep or some original fella.
My theory revolves around the Island being a place of redemption. Tom informed Michael he couldnt kill himself because the island wasnt done with him. This was proved right when both Michael and jack are unable to commit suicide and Christian informing Michael “he can go” before he blows up.
The island, or jacob perhaps im not sure, has the ability to give people paradise (rose and locke becomming cured, jin and sun conceiving etc). I believe everyone who has come to the island is damaged, and the island is their time of redemption and they can either reseem themselves and grow, or reject it. The time space barrier to prevent them getting off the island, or anyone finding it, is a way of stopping people who dont want, dont need or who arent deserving of getting there. Think of all the main characters who have left the show other than claire.
Walt is allowed to leave because he becomes reconnected with his dad.
Michael is only allowed to die because he has not only saved his son and reconnected with him, but has helped/ saved his friends he had to betray to save said son.
Boone managed to reject his love of Shannon and decided to prove himself with becoming locke’s protoge
Shannon can leave because she has now experienced true love with Sayid.
Ana Lucia can die now she has accepted that she cannot kill ‘henry gale’. she has grown beyond her hate.
Eko is killed because he rejects his chance to repent, or is allowed to leave because he has accepted his past errors as sacrifices for his brother.
Nikki and Paulo die because they cannot grow beyond their greed.
Charlie accepts that he is not useless on the island, something he fights against in season one and two, and realises he must sacrifice everything to save his friends and his family,
Here are a couple that may work out or notas their stories arent fully completed: Desmond realises through his solitude how petty he has been and that he pretty much needs to man up and be with penny, and so he goes off and is having a happy life. Juliet has finally found true love with sawyer and can now go.
Notice how i say leave when i mean die. i believe that they are allowed to move on, either to another life or to the real world. it doesn tmatter either way as we see that Lost does have an afterlife of sorts, and all the deadsies seem happy.
oh, and one final point. ben is evil and as such does not get the benefits of the island like healing, but he has a destiny to do something important in season 6 so he has not been punished with death. What do you guys think? I think this theory works with others my friends have had with Locke being Jesus/saviour to the island, and jacob and MIB being God and the devil.