I hate that cliche. Stocks are not pork chops. They do not go on sale. The stock prices reflect what most people think they are worth at this time believing that the economy is about to get worse. They are not a bargain. It's a bad idea to buy stocks the same way you buy sale items at the grocery store. They are different things.
And how's that different than pork chops again?
But at some point people will think they are worth more and prices will rise.
Buying shares of fundamentally sound companies when the price is low is how one makes money.