The more paper money in circulation, the more it adds cost to the inflation and that's why we're nowhere to go but to see an inflation yearly as the government, FED, or those that are tasked to do it will continue to print for which they think it's a way to combat inflation. It's an unending cycle and there's no way to defeat it as per government's so process.

It's because they are the government. They make rules, they make everything they think as the standard.

This is where most of the countries if not all agree to have something of a greater value and even in the past, there's already the value within it. Each of them won't agree that their fiat is better than the other so the gold standard came out. And this is the one that dictates value of paper money as well, cmiiw.

It's not impossible but unlikely, maybe for countries that have adopted bitcoin as a legal tender, there is a chance. But people can't just go on with a highly volatile monetary standard.