The NIKKEI would've given you a positive return if you bought and held and reinvested dividends. And picking the worst point in one of the worst indices does no

The NIKKEI would've given you a positive return if you bought and held and reinvested dividends. And picking the worst point in one of the worst indices does not mean much - most investors are not investing a lump sum (they're usually putting into a pension over the course of decades) and they shouldn't be investing in just index/asset class (all-world diversification and having bonds as part of your portfolio is recommended).