Jacob is obviously the villain in Lost. A woman comes and kills his mom, he and his brother are raised by this abductive guardian, his bro learns the truth and wants to go home, but as he's fine with Jacob staying and protecting the island (Like, why would that be the right thing to do?? If an evil woman broke into your home, killed your mom and tells you to do something, you'd assume it's the wrong thing, right?) So then Jacobs mom goes to burn his home down, and kill his friends, like... Jacob is like, 'No, you have to stay here and fight me! We must be enemies!' So, there's no reason that BOTH of them need to guard the island, both she and Jacob can do that, so then Jacob keeps him here on the island in misery. And when Jacob crashes the plane, everyone has a terrible life and he wants to steal them as candidates and tells the others to even kill some of them. Jacob's brother is only putting them out of their misery and keeping them away from control over the island so that he can leave. He's doing nothing wrong! Jacob is going to ruin Walt's life anyway! There is NO reason to think Jacob is a good guy! He's the literal VILLAIN of Lost!