Faith in stocks in the short term vs T Bills

With the stock market and most individual stocks down so much this year, what's the argument to stay in the market in the short term when 1 month Treasury Bills are yielding close to 4%? Wouldn't it make more sense to throw your money into T Bills, especially since the interest isn't subject to state or local taxes, and wait for the market to show signs of a new bull run, like crossing over the 200 dma? Thank you for the advice!