In some countries where capital controls are tight or the risk of looting is high, the use of encrypted currency can bring more benefits to users than the use of local currency in circulation. Users can transfer property from unilateral or even malicious intervention by local authorities by encrypting the currency. Users can also avoid VAT by using bitcoin for online consumption. Since VAT is the main source of government revenue, this tax avoidance method is closely watched by the authorities.
Whether we agree with bitcoin's ability to evade government regulation or not, we can't deny that these encrypted currencies can indeed bring substantial economic benefits to users.