yes we should regulate a digital currency, to makes sure that the government know the circulation of the bitcoin in that country, so they can makes the policy about the tax about bitcoin and they wouldn't block bitcoin in their country, if bitcoin not regulated maybe someday bitcoin wil be banned in that country
I believe it is important to regulate digital money in order to limit the coming of cryptocurrency in the market and the application of a crypto should properly reviewed before it introduce to the market to avoid any scammed ICOs.