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!
It is not the bad thing about bitcoin, even though it is not yet physical, or it is not yet legal in many countries it is a currency, a currency that can be found in the internet, also the differences between a fiat and a cryptocurrency is, bitcoin cannot be seen physically it is not a bill nor a physical coin while fiat it is physical and regulated by the government. But I dont have anything to say that validates bitcoin is not a good currency.
We already have a lot of physical currencies and they appear useless in front of bitcoin. There are countries where bitcoin is legal then there are those governments who are still sleeping in this matter. Legality and mainstreaming is just a matter of time. For the time being, bitcoin is looked by holders and newcomers as an investment. They are least interested in bitcoin being used as a currency.