Banking institutions, law enforcement agencies, business leaders, Governments and many others call Bitcoin illegal.
But then - Why is the use of Bitcoin increasing?
It is not increasing that much, whatever you hear is mostly propaganda. Do not get fooled, at the moment what the "early adopters" try to do is to pump the coin to dump later on.
That is not possible to do without risk unless you have buyers willing to put their real money into it. Basically,
BTCubble coin needs people to 'invest' so there is always a Greater Fool buying high while they sell and tell the others to hodl.
It is not that simple. In 2014, we were having less than 1,000,000 users. And now, after 4 years that figure stands at 100,000,000. If that is not growth, then you need to explain the term "growth".
It is doubtless that the number of investors has increased over the time and this is the whole reason behind bitcoin becoming this much famous and prosperous. Else, it would not have touched 20k dollars. The number of supporters or holders play a very significant role in the survival of any crypto coin. Bitcoin has the largest community with many rich investors too. This is growth certainly.