Why wouldn't they understand it?
Maybe because an engineer, a doctor, an athlete or a farmer is not an investment expert? Maybe because they're competing against professionals who study investing, geopolitics and macroeconomics all their careers and
still fail to beat inflation caused by fiat currency?
Get outside your bubble, man.
Again, you keep implying the people should be able to get free money without even trying.
Care to explain how "keeping the value of the money you make" translates to "make free money" to you?
You are asking for something that doesn't exist, has never existed, and will never exist.
It has existed in the past. It was gold. Are you following? I feel like there's complete breakdown in communication.