BenjaminBirdie said:
They also formed the sideways as an opportunity to get over any final, lingering issues that they couldn't on the island. That was their final task before finally moving on and achieving final enlightenment.
- Jack gives himself a son in the sideways, so that he could be the father he was never able to be, as well as the father that he never had in his own life.
- Jin and Sun are able to experience the pending birth of their child together, an opportunity that was taken from them in the real world.
- Sawyer is still angry in the sideways, but he's a cop and he doesn't pursue the other Sawyer with the same unrelenting rage and vigor, killing innocent people in he process. He ultimately learned to fully let go with the help of Miles, Kate and Juliet.
- Hurley no longer carries around bad luck in the sideways. It's the direct opposite. He's able to live a life where he purely helps people, with nothing getting in the way, which is what he always wanted.
- John Locke is miraculously fixed by Jack and is able to walk - this repairs and greatly strengthens both his own resolve and his relationship with Jack. This does the same for Jack himself. The two old rivals find peace in each other.
- Ben is forgiven by Locke, who he had killed. Locke was already at peace. Ben finds peace.
- Charlie finally got over his heroin addiction and found peace with Claire.
- Sayid ultimately realized that Nadia was not the right person for him. She belonged to another. Shannon, who he met on the island, was.
And so on.
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