US Stock Market: Best time to pick up stocks is on declines

You will be surprised to learn that since 1745 there have been 48-50 recessions in the US that spanned from a few quarters to 11 years of the Great Depression from 1929. Within the great depression itself was an expansion.

Since 1990 US has had many periods of economic expansion and contraction, so logically speaking a recession should not come as a surprise.