as we know so many reason to make controversial bit coin currency in practical or real media sanitation. if we observe very carefully few past few years we have seen that criminal activities or occurrence are occurred by the help of hackers and trader make it famous moving thousand of dollars outside by cheating with government law enforcement for that reason value of bitcoin increasing very high. even they make money away from center bank and government unable to hold money from general people and through this process people convert this money into different things. i think this is enough for making controversial and what do you think about my think ?
I don't think we can say the criminal activities have occurred from the last past years by the help of hackers. No. Criminal activities are all over the world. They occur every day in many manners, and they don't reside only in the hands of the internet.
Besides, on the internet, there are many criminal activities, and not all (only a few, probably) are related to cryptocurrencies. So, no, I don't believe those are the mean reasons why bitcoin is controversial (we are talking, as you pointed out, just about Bitcoin).
To me, the most controversial part of Bitcoin (and the cryptoworld in general) is that: for the first time in History, money is not made by a few, but by the people. This hasn't happened before! Normally, there is an elite controlling the system, controlling the people. But, now, this elite can be anyone.
In the other hand, politics are based on economics. One country has power over others just because of it (apparently) has more economical power. They demonstrate it by their big enterprises, by their money (which can print anytime they want) and by their debts (how much other countries owe them). So, basically, global economy is based on the speculation of a few (rulers of the world).
Now, imagine a new kind of power emerging. One they can't even control, one they can't even completely understand. Of course, they are afraid, for anyone, any country now can raise beyond their power!
Illegal acts related to money are always going to happen. But this is not only related to Bitcoin (or crypto), but to diamonds, marijuana, gold, silver... and whatever you imagine. Where there is money, there is corruption. But this is "normal" in such a greedy specie as the human. The freedom of money... well this is the first attempt in the history of creating this!!