How can ordinary paper have value? Anyway most of national currency is in virtual state today as well. We create value for those things in order to exchange value between us. Because as it goes in the old time trade was used cow for few chickens for instance. With a medium such as currency you can exchange what you want and whenever you want to as long as people are giving it value. Same applies for bitcoin why it is worth. Although it's price also comes from the fact that people are investing in order for them to get nice returns tomorrow. But you can use and receive your bitcoin for various things.