I personally think both with coexist in the near future. Decades and decades from now that could all change.. The people that run the world will not fold over easily, and they fully understand the implications of a decentralized global p2p currency. As far as I'm concerned, it's just smart investment to own some cryptos, because there is a good chance that they are the future.
RE: Erik Voorhees on "Is Bitcoin the Future of Money?"