You also have to take into consideration the availability of technology to be able to implement it as a worldwide currency... Anyone can have access to dollars because they can hold it in their hand, such as people in Africa. They cant hold bitcoin in their hand, because they need advanced technology, and people in Africa have little to no access to advanced technology as of right now. This is also the case in other LDCs (Less-Developed Countries). One might say it does not matter because LDCs don't really help the world economy, though. Its all a matter of opinion.
once the price starts to stabalise people will just use paper wallets as money.. i just see the only difference being the paper wallets have scratch card type stuff on them to cover the private key or have to be peeled apart to reveal the private key.. would that not be that same thing as "holding" usd.. people will accept them because they no they would be able to go into a shop that sells them and sell them back to them or give them to someone else as "money"... no idea how they would prevent counterfits but im sure someone will come up with something
(and enjoy it.)
