Bitcoins are just that good of a technology since transacting with it is untraceable and police can ice you out because they don't know where the bitcoins came from. Crime sprees and hackers will take advantage of this feature and make cyber crimes much more achievable and easy.
There are really crimes that uses bitcoin as mode of payment transactions. It is currently circulating which gives headaches to authorities. Very soon, the corrupt government officials will use bitcoin to hide their indentity and avoid being caught.