One of the best features of Bitcoin is it's anonymity. This is also one of the reason why countries are banning or at least hesitant to embrace the technology. From money laundering to illegal drug transactions to human trafficking. We always blame the FUD from mainstream media, financial institutions like banks, the government etal. But do you think, the one that would "kill" Bitcoin is actually the nature of it.
Here's another news where Bitcoin was being used in an illegal activity. This will raise a lot of eyebrows because it concerns our children.