Quote from stevegee58:
But as long as 2 people are willing to exchange goods and services for BTC how can they be stopped?
Usability. Tell it to the masses that this wonderful digital payment is only good between 2 private person but they can't use it for paying at Amazon (the ultimate goal) or any other online retailers or not even at the coffeehouse and see how the value and usability declines.
Also, if they get fucked by not delivering goods or services, the authorities will just say: it is illegal anyway. So its value is directly tied to usability and security....
There is really no point in arguing about this....Not to mention that right now the widest use of bitcoin is investment/speculation and once it is illegal most of the players will drop it like a hot potato...