People used to send their letters via post office after paying for tickets. Similarly, people now use banks for money transaction and bank charges them. The way people shifted from post office to Emails which is free of cost and much faster, in the same fashion, people will opt for bitcoins in near future. So what I think is that bitcoin is a future currency, the way, we can't touch our emails but still it fullfills our purpose same as bitcoin doing, we cant see it or physically touch it but if will fullfill our needs much efficiently.