Unfortunately, the world tends to dish out black swan events that invalidate your assumptions of what is reasonable. Canadian truckers, Argentinian hyperinflation, Sri Lankan federal deficits, Turkish central banking mismanagement, Russian expansionist delusions... the list goes on and on.

Sure, the dollar is reasonably stable. The problem is that the global financial system is deeply flawed in its fundamental properties. Bitcoin is a hedge against inflation, financial meltdowns, geo-spatial catastrophy, and more.