Maybe The Reason Stocks Were Down So Much Monday Had To Do With How Americans Were Brought Up, Taxwise

All those commentators telling us exactly why our stocks went down Monday.  All those stories about China, about the Fed, about just about anything, except what was probably the biggest factor, American greed and the intense desire to avoid taxes.  (Disclosure:  oh-so-long-ago we worked as a Revenue Officer collecting delinquent taxes for the IRS).
Here's what we think happened:  hordes of investors, with an eye to paying last year's taxes in about four months, looking at nice profits in some stocks like Apple, watching some deterioration in those same stocks, itching to sell and bank profits, but not wanting to pay the taxes so soon, held off and held off and held off until the first trading day of 2016 so that the tax bill was due in sixteen months rather than four.
Sometimes the best answer is the simple one.  But that would put the tv experts out of business.