Bitcoin is a new currency, which means it is a new type of money. Unlike the money that we use today that is controlled by our governments and a few powerful organizations, this money is a digital currency, that it is not printed by banks. This currency is accepted globally for the same value.
This decentralization is the reason for the freedom and security with this currency. This type of money has never existed before and has no fees or middle men benefiting from the use of it. It is similar to using a free App to call friends and family anywhere in the world instead of paying expensive phone bills. For the first time, we the people control the money we use and never have to pay institutions to keep our money or use our money then charge us a bill. The best part is that it is safe.