You have a good strategy for normal times. But the national debt is over $22 trillion, the global economy is awash in debt, public and private pension funds are underfunded and may not be able to pay their obligations, and there is the real danger of cyber- or military warfare breaking out at any time. Kim Jong Un and Putin plan to meet soon. If you saw 60 Minutes last Sunday, you'd know that we identified a Russian cybercriminal to Putin and instead of incarcerating him, Putin put him to work in his intelligence services. We have real enemies in Iran, Russia, China, North Korea and others, including individual rogue actors.
There's the real danger of a major earthquake along the ring of fire which could send half of California, and/or Japan, and other nations into the Pacific Ocean. There are superbugs evolving for which we have no cures. Earthquakes, wars and rumors of war, plagues, and famines have occurred throughout human history and will happen again. Your money and your stocks won't save you if major catastrophes start unfolding.