Because of bitcoin does not give public details of people who make transaction with it, some people do say it promote crime.
People who say this can be ascertained, that the person is not someone who knows about the bitcoin system and even the information he knows about bitcoin, maybe that's all. So if I personally, were faced with someone who asked a question like that, I would definitely answer it very concisely and concisely. Because to explain why transactions in bitcoin are very anonymous and why this is so important. Actually the answer is very simple, namely to maintain the privacy of every bitcoin user so that his bitcoin assets remain safe.
Not that with anonymous bitcoin transactions, it is intended for something evil, but this is for the good of investors in bitcoin itself.
So in essence, bitcoin and all the systems embedded in it, there are no elements related to crimes or criminal acts.
Indeed, there are a handful of criminals who use bitcoin as a mask for their crimes. Namely by committing fraud and such. But criminal acts such as fraud, do not only occur in the world of bitcoin, but even in fiat money this has even happened frequently. So those who say bitcoin and its transaction system aim to obtain public data, this opinion is very wrong.
Because according to the assessment of the US treasury department alone.
fiat currencies and traditional networks that turn out to contribute more (in the majority) to criminal flows than digital currencies such as cryptocurrencies.
Source: https://coinvestasi.com/berita/kejahatan-keuangan-terjadi-di-mata-uang-fiat