I'd say aprox a quarter of whats stopping people from using Bitcoin is the media made conception that Bitcoin is associated with criminal activity.
thats true in my opinion and i think that way more people would use bitcoins right now if all those people wouldnt be made to think that bitcoin might be illegal and that it might give you prison
i think people shouldnt care that much about the whole media thing but in my opinion also countries sometimes ban bitcoins so people just dont get a chance to use bitcoins even if they actually want