Why not all equities all the time?

In the last podcast of the year Paul discusses the many important projects Chris Pedersen, Daryl Bahls and he will explore in 2024. He then addresses a question from a listener:  Why not all equities forever?  The question is the focus of a wonderful interview with  Scott Cederburg, Associate Professor of Finance at the University of Arizona.  Scott is the guest of Truth-Teller Ben Felix and Cameron Passmore on their podcast, Rational Reminder. In this podcast (https://rationalreminder.ca/podcast/284) entitled "Challenging the Status Quo on Lifecycle Asset Allocation” Scott discusses his groundbreaking research on the implications of retirees using all equities during their entire retirement vs. the traditional stock/bond allocation most experts recommend. Paul uses Tables D1.4 Fixed Distributions S&P 500 and D9.4 Fixed Distributions U.S. 4 Fund to demonstrate how much better returns than all equity large cap blend can be earned with a combination of small, large, growth and value and up to 50% in fixed income. Another listener asks where one can find the tables referenced in the podcast entitled,  "The best gift of all? A financial legacy for a child"     Here is the link to the pdf that includes the tables mentioned in the article. He also recommends he review these tables that Daryl put together to show the impact of two investors starting at age 18 and 23.