I don't really agree with this, because bitcoin is made to be a medium of exchange, a currency to be exact. The unlimited wants and unsatisfactory of the people lead for the decline of bitcoin. People kill the nature as well as the bitcoin. Criminals use a lot of ways to fund their illegal activities. Besides, Bitcoin transactions are not 100% untraceable.  if the government wants to track it they can track any transaction. Anonymity is an advantage more than a disadvantage. It is just another excuse to ban Bitcoin. Criminal activities existed way before the development or creation of bitcoin. Criminals fund their activities in various ways.