You can't plan to spend your last dollar on your deathbed unless you can predict every expense, the market, and the day you'll die, especially over a retirement

You can't plan to spend your last dollar on your deathbed unless you can predict every expense, the market, and the day you'll die, especially over a retirement that long (potentially 50+ years). Planning to leave something behind is really your only chance, unless you're comfortable with a very high chance of bankruptcy along the way.