I think the primary reason people have such hard time understanding bitcoin and other cryptocurrency is because they don't understand the value of fiat currency. The quantity may be defined by the federal reserve, but the value of the dollar or any fiat currency is defined by the value of the industry in the nation. The US dollar is valuable because we have a massive economy and almost everything within that economy can only be bought with dollars. The value of bitcoin is its security, trustlessness, and decentralized architecture.