A complete explanation of Wall St versus Main St
Cheapo Bird Feeder

The stock market bias is higher in the long run and here is WHY

Of course FED money printing, stock buybacks, and mergers play a huge role in sending stocks higher, but the number one factor is the way market averages are manipulated!

The components of the S&P 500 update periodically. Between 1/1/2005 and 1/1/2015, 188 index components were replaced by other components. In other words, drop the companies going bankrupt and replace them with companies in their growth phase.