Using "
THEY" will without a doubt bring the

responses. But in the context of Bitcoin, "THEY" represents a lot of real, recognizable, and powerful people. It's not just the Federal Reserve, but central banks around the world (
https://qz.com/1148052/beware-of-bitcoin-the-reserve-bank-of-india-warns-again/). And because using bitcoin is one of the easiest ways to launder money, criminal enforcement agencies, anti-terrorism agencies, and department of defense don't like it, as a lot of the forces they are fighting are funded via money laundering. Like I said, the best way they have to kill Bitcoin is to pump it up into a bubble and burst it. That would kill confidence in it, and a currency without confidence isn't worth much.
That said, as many people who have read me for years know, I believe modern money mechanics is due for a serious change, but not because of crypto-currencies. It is due to change because the Federal Reserve was not designed for how the US dollars is being used. Essentially the problem is the charter of the Federal Reserve does not fill the need for a world reserve currency. Because it doesn't, the US has to consume more than we produce, so that the world can get the increase in dollars needed to match the increase in the world economy. Basically this means Americans get to live better lives than the rest of the world as our consumption exceeds our production. And this situation only lasts as long as other counties are willing to keep the status quo. That will never go on for ever. I don't know when it will change, but eventually the world will create a world reserve currency that does not benefit one country over everyone else. And it won't be bitcoin, because the creators of bitcoin put a limit on the maximum amount of bitcoins that can exist, and a limit on how many times a bitcoin can be divided. It also suffers from not even being close to being able to handle the amount of transactions per second the world would produce if it was used as a world reserve currency. So not only is bitcoin fighting existing central banks, a world reserve currency would likely be developed that is just as appealing as bitcoin for many of the same reasons, but without the problems bitcoin suffers from.
Time for the irrational bitcoin buyers to respond that I don't know what I'm talking about. In 5... 4... 3...