> The implicit assumption behind that is that the American economy always invents a way to grow. Buffet famously said, "never bet against America".

Or you invest in a total world market fund for better diversification.

Diversification would have helped anyone in Japan(-only) in 1990, and anyone in the US(-only) in the 2000s. It's a very easy strategy nowadays:

* https://investor.vanguard.com/investment-products/etfs/profi...

* https://www.vanguardinvestor.co.uk/investments/vanguard-ftse...

* https://www.vanguard.ca/en/advisor/products/products-group/e...