Most people I know believe money can only be defined by a government and only functions if it is "managed" by a central body with the power to "expand supply to grow with the economy". (Nevermind this is never actually implemented in practice.) And so refuse to trust in anything else.
Most people know more about how electricity works than they understand how money works (this includes the people who issue and control the money).
We know that electricity works in spite of how few people understand it.
Bitcoin will be the same. It will be adopted because it works long before people really understand how and why it works.
Yes. Most people believe that money is a 'thing'. But it isn't. Money is debt and never had been something different. Gold and Gold 2.0 are more or less liquid commodities.