It does no matter for good cause or bad cause because what matter is bitcoin are not made for bad cause, if thare some peoples who use bitcoin for bad cause then it is not the blame for bitcoin, just like peoples who make and sell knife where knife can be used in the kitchen or can be used to hurt peoples.
I'm now using bitcoin to gather funds to advance the movement I'm on since 10 years ago, I just recently use bitcoin fund channel a few days ago and still nothing yet ^_^
Its true you don't need any identity to start bitcoin, or paying someone. But most of stealer use this fact to steal coins. They're aware governments can't reach on your place neither any police can touch you. So for scammers and stealer its easy to stole your all money without any fear. knife is for cutting, but people use it for some other purpose.