Until we only use bitcoins we are out of reach of tax authorities. Government will long sit as the dog in the manger. To accept bitcoin they can't because to lose power. Not to accept bitcoin, they also can not because the capital to run to where the access is allowed. It is better that black capital work for the country than it will be to support the economy of another country.
Did you guys check out the congress hearing about bitcoin a few months ago? I remember they brought in experts and tried to understand it, then kept asking "How do we regulate it, where is the pressure point??" to which the experts would of course reply "We can't" LOL