Anonymity is a thing for criminals and bitcoin can give it to them, but it doesn't mean that you are perfectly anonymous. You can still be tracked the reason why many criminals are caught whose using bitcoin, even the silk road was shut down. We can't stop these people use bitcoin with their illegal acts, but I think without these illegal acts, bitcoin is not that used and have a low price.

Scam, scam is a kind of criminality. Every person who know about bitcoin is more being obsessed of how he/she get a bitcoin. So more people nowadays, want money with easy of doing they didn't care if they do bad or good they only want is to become richer than anyone.

Yes, it is not up to the Bitcoin or any other currency. In every era there have been good and bad people the bad people will make their ways to the crime in any case because they have come up with a criminal mind. No matter what ever the medium may be the criminals will commit the crime because of their choice so we can’t make the Bitcoin guilty of the illegal or criminal activities.

Well, the main thing that the government will seek is the control on the network and wealth and since Bitcoin is something that is beyond the control, they will try to somehow seek share from it in the way of taxes of tax or something like it. (I am not against taxes but the control and compromise in the privacy). We might see some major countries will legalise Bitcoin in next few years (they should do it imo) and it will help us to build the cryptocurrency friendly infrastructure and environment without affecting the core values and principles of this technology.

Even if someone is making illegal transaction even it is not a something too big to be highlighted for bitcoin and make the bitcoin responsible for all these acts.
We all know it very well that the USD is the most popular currency deal by the smugglers and the underworld so, I think this discussion is just a waste of time and nothing else.

I'm not going to deny the fact that it probably has HELPED with opening up a new door to criminals, but I wouldn't say thats increased the criminality in places cause that's just an absurd claim to make. Think about it, criminals aren't just going to start committing crimes due to Bitcoin nor are they going to stop if Bitcoin is going to go away. They're just going to find a new medium to help them in between, and in my opinion I just think Bitcoin is one of the many minor ones that they're using.

Cash is always going to be king when it comes to this sort of thing, that's just bound to happen.

Yes criminality was connected to bitcoin. why? because bitcoin can used by anyone. We are free to do things that we want on it. And the fact that bitcoin was also a type of money this was the main cause of criminality. Criminals becomes greedy when it comes to money and we cant do anything to stop them instead the only thing we can do was to be careful.

Bitcoin is a kind of money that cannot touch it is only for computer. Some person that has knowledge about hacking of highly security can hack the privacy of person who have a lot of money. Using bitcoin you can buy and sell some illegal products.
I read some page that "Federal Bureau of Investigation (FBI) and other law enforcement begged to differ. Ross Ulbricht, the 31-year-old American who created Silk Road, a Bitcoin market facilitating the sale of $1 billion in illegal drugs, was sentenced to life in prison in February 2015.( http://www.sciencemag.org/news/2016/03/why-criminals-cant-hide-behind-bitcoin ) " so meaning bitcoin is so very highly money that can use for criminality. Be aware of using bitcoin there some country create a law that bitcoin is illegal in their country.

Yeah, that is why bitcoin is banned on some countries, people are buying illegal stuffs like drugs ang illegal firearms, so in order to prevent this things, the Goverment
 banned it on some countries. But right now, in those countries, they are starting to accept bitcoin because they are witnessing how bitcoin powerful is.

Japan is one of the example of the countries who accepted bitcoin as a currency, and if I'm not wrong North Korea already accept bitcoin also.