Unlike every other attempt at electronic cash that came before it, Bitcoin also doesn't need the approval of any person, police force, legislative body, military, or government. I'd challenge people who hold negative views on Bitcoin to name some other systems for which this holds true.
For it to be useful it does. How else does one convert from fiat to btc and back again?
For it to be useful it does. How else does one convert from fiat to btc and back again?