From recent news in India it is heard that bitcoins are used to sell drugs..I know its a currency and it is also used as a normal money... but these can create a bad space in people's mind that bitcoins are used to sell drugs..so they will not use bitcoins... Conclusion is that BTC is also a currency which is having a high value in the market..and bitcoins must not be used in these illegal activity which can reduce its usage and value.
Their are many people using bitcoin in a bad way. They scam people using bitcoin. That's why more and more people also are attracted to used bitcoin even they don't know how and what is the main purpose of bitcoin.