is not that bitcoin able to change the state of its users which effects also on the state of the country's economy, why even banned hemzzz

They may want to ban it, but it is nearly impossible to carry on effective measures to implement that decision. In essence, they just don´t like people with too much economic freedom.
Yes, Economic freedom could be a reason,but their is some other reason present too. Bitcoin is first world decentralised currency which means no single authority or person can decide its production and distribution. And this thing directly affect an country own currency and ultimately affect country economy. And no government never want any thing which affect their country own currency. Bitcoin is also related some other serious issues like criminal activity. Its uninterrupted and untraceable money transaction facility support anti social people to did this.
