Legendary financial journalist Jason Zweig recently posed a provocative question in The Wall Street Journal: “Should You Just Buy Stocks Until You Die?” As someone who strongly believes in owning the great companies of the world for the long haul, I’ll admit—it’s an intriguing question. After all, the stock market might be the most accessible wealth-creation tool ever invented. History supports that claim. Patient, disciplined, diversified investors with long time horizons have done...