I once read an article that says bitcoin is used as a payment transaction for terrorists and hackers. And maybe you guys in this forum also already know it. But here i want to convey my personal opinion in that matter. I think that internet and bitcoin interrelated. Many terrorists and criminals use internet .so also with bitcoin which used perpetrator However, despite all these issues, do people make concrete efforts to ban the internet? No. Not because removing and banning Bitcoin is difficult, but because the internet offers more positive than negative. For the same reason, we have to be more careful about our mindset for Bitcoin, because much evidence has shown that Bitcoin brings many positive, if not more, effects than the internet. Internet and Bitcoin are just devices that 'bad guys' and 'good people'. Fortunately, the world is filled with more people in the 'good people' category.
One of Bitcoin's best feature is anonymity. Sadly, this is being used also in illegal activities. But, you don't really need Bitcoin or any other cryptocurrency to transact your illegal deeds.
Even without Bitcoin, illegal activities will still be there and there's ton of ways where you can transact something for your illegal activities.
This is reason, that Bitcoin is bad because it is being used by shady people is just being used by those who are against Bitcoin.