Another pro-indexing article, from the big dawg Mr Shwab himself adding context.
There’s no shortage of literature discussing the difficulty of outperforming the market on a consistent basis. In the popular book, “A Random Walk Down Wall Street”, Princeton economist Burton Malkiel argued that a “blindfolded monkey” has just as good a chance of outperforming the market as a market professional. While some individual stock pickers do beat the market each year, data from the Schwab Center for Financial Research illustrates how difficult it is for actively managed funds to deliver outstanding results year after year.
Same reasons most here do it I presume, low-cost, simplicity, buy the whole market, and its hard to consistently actively beat market etc.