bitcoin is a double edged sword on one hand using it provides security on the internet since no one can trace you down and on the other hand it provides a big opportunity for hackers and black market dealers that use it for selling drugs and other illegal stuff since it provides anonymity,but it all depends on the person that is using it
The bitcoin is not totally anonymous. It is pseudo anonymous. So you can be traced by using the bitcoin.
That is true. As the trail can't be destroyed in blockchain, the user can be tracked back with varying levels of ease. However, if the user mixes his coins, then it takes a lot of time and effort to track him (an example is Tomá Jiřikovský, the Sheep Marketplace thief).
Nowadays, mixing service is very popular especially when you are doing an illegal activities. True, you can trace the bitcoin address for the transaction but it's hard to determine who are the people transacting. It's the benefits of using bitcoin but we do not need to abuse it as it might not give us a good benefits.
We can't even stop those people who are abusing bitcoin for real. Because they are loving the way they use bitcoin for their bad plans and doings. But let's just forget those people who are involved to such activities and instead of talking about them, let's just all together work for the good of bitcoin and use it for our own good and needs.
Yes, in fact bitcoin is use for good purpose only but still there may be some people who are using it for illegal activities or purposes but mostly we can see that people use bitcoin for fulfilling their daily needs like shopping etc, so most of the people are using it for good purposes.
By considering the potential of bitcoin, it may serve serve human for a better life but only if we start innovating new ideas.