Bitcoin is still ethereal and mysterious to many people. Many people get their news from the press, hearing the talks about the illegal activities and the rise and crash of the price. If any acceptance is to happen it will have to be after a renewal of information.
That's true bad news travel faster then good news. People are just looking at the news that media is providing them and they just start to believe it without any research or investing their knowledge in it and Government is supporting media to do so as Govt is also against the bitcoin.
The people who publish the news rarely publish positive stories because they bore people. They publish negative stories about crime, violence and drugs because people want to read those types of stories. There are positive and negative sides to Bitcoin use, but the news is only interested in publishing stories about the negative side.
They publish the news that get attention and revenue.