Blockchain is much more than currency (Bitcoin, Ethereum, and other alt-coins).
Technologists are excited for the possibilities that instead of a middleman — in any industry from bankers, to real estate agents, suppliers and distributors — individuals and merchants who supply a product or service can directly deal with their customers looking to purchase the product or service offered. This is what is called a P2P (peer-to-peer) network. Decentralized is another term often used but it basically means micro-transactions are not regulated by those we have come to acknowledge as trusted parties to legitimize these exchanges of assets.