You don't actually make any choices. You make all of them, each branching off into its own universe. As there is no way to avoid doing all of them, there really isn't any choice -- especially in the Christian Final Judgement moral sense.
I may be missing something, because I don't see how it's possible to control an infinite number of me's across the universe without essentially being God. Or why on earth you'd be responsible for the choices of yourself in another universe, or why they're all considered the same 'you'.