Try and ask a central bank official or #AskECB the following question: If given the choice, would you prefer to be paid in a form of money that looses purchasing power over time (a) or in a form of money that doesn't? (b).

If the answer is (a), you'll know that he/she is lying to you (you can independently verify this fact using logic, in addition to common sense). 

If the answer is (b), he/she will have admitted that central banking and state fiat money are contrary to the interests of each individual. 

Of course, he/she will try to evade the question and to obfuscate ideas with some Keynesian macroeconomic bullshit. Keep him/her on the simple question. 

The very fact that something (an opinion, a product, a particular kind of money, a relationship, sex: anything except a non-arbitrary coercive rule) needs to be imposed by force, is in and of itself a sufficient reason to establish, with absolute certainty, that it's wrong.

Central banks, like the ECB or the central bank of Venezuela for example, rely on the fact that most people don't know economic science, nor the science of liberty. 

Bitcoin, on the other hand, has rendered such knowledge unnecessary. Thanks to Bitcoin, individuals are progressively drawn towards sound money through a system of incentives and are free to choose it due to its censorship resistance. While Bob may not be familiar with the Austrian School of economics or the logical implications of the principle of equality before the law, he understands damn well what is best for him and his family. Bitcoin adoption does not necessitate knowledge of economic science or the science of liberty. However, it tends to contaminate people with them.

There are undoubtedly numerous reasons why central banks oppose Bitcoin; most are related to safeguarding their privileges granted by the state to extract more money from people through inflation. However, beyond the obvious motivations, it's hard not to consider additional psychological reasons for central bank officials' opposition to Bitcoin, namely:

- shame: they don't want the hoax of 'public' fiat money to be exposed;

- envy: they resent the idea that some individuals are prospering outside the monetary cage in which central banks strive to keep them.