The real problems is who exchange bitcoins from and to dollars ad EUR's, and also the security is an issue - today news:
Bitcoin Central (the biggest EUR bitcoin exchange, based in France) compromised.
?We have been compromised, please do not send any funds to your wallet."
https://bitcoin-central.net/
Have funds been lost? A few hundred Bitcoins have been stolen from our hot wallet.
How did it happen? Someone managed to reset the password from our hosting provider web interface, [...], the attacker copied our hot wallet and sent away what was present.
Banks attack on the other side:
Bitcoin Dealers Are Running Into Problems In Canada:
http://www.businessinsider.com/canad...inesses-2013-4
James Grant, owner of Canadian Bitcoins, got a letter.
Melvin Ng, proprietor of CADBitcoin, got a phone call.
Study: 45 percent of Bitcoin exchanges end up closing:
http://www.wired.co.uk/news/archive/...hanges-attacks
In fact the bitcoin system may be smart as a source code piece, but, when it is targeted by hackers + banks both, it is quite difficult to exchange it with USD and EUR in stable way...