Bitcoin allows money to be sent anonymously across a peer-to-peer global network, with no intermediaries needed to validate or process transactions. That has made it attractive to those who want to keep their identity secret, including those buying and selling illegal goods and services on the internet.
that's right, since bitcoin is decentralized, you are the only one who has the access in all your money, no banks, and even third parties. having a transaction with anonymity is the best thing I like in bitcoin.