The irony is that that's not far from the reason that they were first conceptualized.
David Deutch is a proponent of the multiverse interpretation of quantum mechanics and originally came up with the notion of quantum computing as an experiment that could ideally prove the truth of the multiverse interpretation by solving a problem large enough that it would not be tractable in one universe.
David Deutch is a proponent of the multiverse interpretation of quantum mechanics and originally came up with the notion of quantum computing as an experiment that could ideally prove the truth of the multiverse interpretation by solving a problem large enough that it would not be tractable in one universe.