Bitcoin is not a valid currency because bitcoin was created not to be a physical buying and selling tool, whereas our real life is the life in which we transact in real terms like for example: we buy shoes with legitimate money / currency. We live in the real world not digital nature hhehehehe. And why is bitcoin not good as a currency because of the price of bitcoin itself can be said to be unstable, where the nominal value of 1 can change every second. While for example the dollar, it is clear the count.
Please go educate yourself more! You don`t know anything about what bitcoin is and what it stands for. Even less you know about what is 'legitimate money'! I don`t know why you spend time here earning Bitcoin advertising crypto exchange when for you dollar is a clear count!
I need to say that I didn`t saw a crazier comment in recent times, and you are a senior member? You probably bought that account!