i have no idea about this but i think being currency like other currencies. they may be used for both good and bad activities,
Yes you are right. Money is a means of payment, they can not be good or bad.
While one can see only what Bitcoin gradually penetrates into the various spheres of life. He himself is neutral, as any means of payment.
If you declare a Bitcoin out the law of the same number of criminals will not decrease, it is necessary to learn how to deal with it, the crypt has to be the most important financial instrument in the future.