It's not a currency its a commodity that you buy and sell that can be turned into currency. get it? like gold, silver, timber, salt... graphics cards ;p
I don't pay the cashier with a 5gram bag of salt that is near or equal in value to my bill.
My etherium that i only got $1,100 of back in the summer is up over $6000 now.
I had no idea what it was hardly