Rebuliding society...
Let's say the world ends as we know it, for whatever reason. War, whatever. All governments have crumbled, all armies are no more, there is no electricity, no running water, basically there is no order.
The Joker (The Dark Knight version): There will be no order. Anarchy and chaos will take over. You can do what you want, when you want.
Tyler Durden: Pretty much the same as the Joker, except there will be a chain of command, and all decisions will be made during a session of Fight Club. No voting, no Congress, no bullshit.
Robert Neville: He can potentially restore things to the way they once were.
Darth Sidious: He will be a dictator, ruling with an iron fist. He's a ****ing Sith lord, FFS.
Who would you choose to follow?