The market may be volatile due to global events from the United States and other major economies.The idea of passive investing is to avoid high fees which results from the constant buying and selling that potentially occur from frequent trading, and perform more effectively from the strength of the global economy in the long run. 

A good estimate for the investing duration is around a market cycle between a rising market and a downturn. Historically, it takes about 6-7 years to tide past most downtrends. 

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