Carroll: “The price we pay for such a powerful and simple unification of quantum dynamics is a large number of separate worlds.” Right. And the price you pay for suicide is that nothing you do in this world afterward matters.
The question she leaves unaddressed is why scientists would choose, despite the absence of evidence, despite the fact that the multiverse is “unobservable by assumption,” to believe in a multiverse.
But wait! There might be an infinity of multiverses in which you are not unique. This is the only one in which your head has not exploded.