The stock market is nothing more than a huge Ponzi scheme. In a stable market, the selling price of a company's stock would represent the value of that company plus any expected increase in earnings. Ha ha ha.
On any given day, the market might lose 2% based on facts that have nothing to do with the potential of the company. We can get a bad report on employment and the market will drop 200 points. The next day, even though the same conditions still exist, the market might rebound 300 points. It's all a matter of programmed buy/sell algorithms, and has nothing to do with the real world.
If you buy stock when the market is at 12,000+ and the bubble bursts, you have no one to blame but your own stupid self.
We are in the midst of a depression folks. The economy is teetering. Why is the fucking market increasing every day? Ponzi! Only one thing will turn the economy around. Jobs. Unemployed people don't buy shit. If you want the economy to turn around, fix joblessness. Once the people have a dime in their pocket, they can't wait to spend it and the economy grows.