Well, the hard truth is that every currency is used for illegal activities, and bitcoin is one of them.
In the dark web there's a lot of illegal things you can buy with bitcoins.
Fact is that all kinds of currencies and precious metals are being used to finance illegal activities, but still the media and average joe is blaming Bitcoin for this. They somehow don't realize that Bitcoin is nothing different than fiat. It's money. In that regard it shouldn't be weird to see that people use Bitcoin for all kinds of illegal things. Especially when you consider how convenient using Bitcoin is.
Well, everything can be used for good and evil, just look at a knife, knifes are very useful tools try to imagine your life without valuable tool, but there are bad people out there that will use knifes to steal or worst.
totally agree with you, very good analogy with a knife. I think it depends on the wearer himself do not blame the object because it is just a facility which uses the full responsibility. so do not blame bitcoin for involvement in illegal transactions, because everyone is free to do anything with bitcoin.