2. USA is superpower at the peak. Plenty of other stock market economies hasn't been so successful. E.g. Argentina used to be one of the richest country in the world. Investing in history is easy, e.g. you can also say about Apple stock that it will always recover based on past data, but plenty of other companies hasn't.
1. GDP growth is not as high as it used to be anywhere in developed world: http://www.oecd.org/std/productivity-stats/oecd-compendium-o...
2. USA is superpower at the peak. Plenty of other stock market economies hasn't been so successful. E.g. Argentina used to be one of the richest country in the world. Investing in history is easy, e.g. you can also say about Apple stock that it will always recover based on past data, but plenty of other companies hasn't.
3. Most of the 100 years we have inflation: http://inflationdata.com/Inflation/Inflation_Rate/Long_Term_...
Right now interests rate are close to zero, which is rare. Long term trends may change if we continue to operate in those climate.
Edit: Inflation was factored in the graphs. Sorry I was wrong about that.