Bitcoin already transacends geography and allows for transferring value without requiring the world to switch to a centralised command structure. This is already in place, and years ahead of anything global diplomatic committee can come up with.

You seem to see bitcoin as a company/entity that tries to displace all other currencies. That's simply not the goal. Don't believe the libertarian crackpots on this forum, this is *not* a political faction. This is simply open source distributed culture spreading to value exchange systems. Just like operating systems like Linux/BSD broke the Microsoft monoculture, systems like Bitcoin break the money transfer "monoculture".

For now I see Bitcoin as the perfect payment method for international online jobs. Someone in India could write a program for you, and you can pay for it instantly, without having to worry about banking options available for you/him and the fees associated with that. Internet connectivity is enough.

But if you rather wait for the "one global currency" that's OK too. But there's nothing wrong with kids being enthusiastic about it. They're usually more idealistic and sooner see the advantages of new technology even in its baby stages. And it's pointless trying to discourage them from that, they'll just see you as a old sob that defends the status quo. And they're not wasting their time, at least they're learning useful skills instead of watching tv...