In the 21st century we can see people who say they are against the Bitcoin system. And with that it creates several obstacles to say that Bitcoin does not work, ranging from the threats that the system can offer to our financial system, to the environmental problem.
Bitcoin represents an evolution in the decentralized financial system...
In turn, it is notorious that bitcoin is not controlled by a small group of people and/or power, as the fiat currencies are under the total control of the government. In this case, being the government against Bitcoin we already know why, but when it's normal people like you and me then there's something wrong in these people's minds.
To be against something that brings freedom...
The world has evolved, society needs to understand that this evolution is fundamental for the society we are living in, in fact this new increasingly digital experience needs to gain its space, this is where Bitcoin and other cryptocurrencies are standing out more and more.
Over time, we will realize that the current financial system must remain in the history of the past, because more and more will find difficulties to survive. Bitcoin was never a threat, it was just created to save humanity from this all-controlling system of government.