Why is a passive index ETF the best investment choice for most people? During this recent U.S. stock market pullback, the S&P 500 only dropped by 2.27%. Meanwhile, many people saw their portfolios lose 20-30%! Just like in the chart below . Warren Buffett once advised in his will and public letters that after his passing, 90% of his estate should be invested in a low-cost S&P 500 index fund like IVV, and the remaining 10% in U.S. short-term government bonds. This post is sponsored by @binancezh: 'Buy U.S. stocks on Binance: Global assets, zero time lag, one-click access'!