All 20-30 years? Believe it or not, the history of investment spans more than the last 25 years. Also, there are some questions regarding the liquidity of ETFs

All 20-30 years? Believe it or not, the history of investment spans more than the last 25 years. Also, there are some questions regarding the liquidity of ETFs during a major crash/selling session. It’s possible there could be a feedback loop of selling to deal with cashing out that results in price of the ETF going below net asset value.