The US Dollar is FIAT Currency. That means nothing tangible is actually backing it. Bitcoin is the "Savior" of anyone who invests in it, because it's property ( not currency ), decentralized ( no Government or Bank controls it ), and the transactions do not require any intermediary, because all transactions are P2P ( Peer to peer ) in a Blockchain ecosystem. So, the "threat" isn't to us, the people, but the "threat" is actually, to the World Governments and the centralized Banking systems of every Nation on Earth.