I would guess this has been banged around before, but a friend of mine was promoting his logic behind a somewhat aggressive AA and withdrawal strategy, which made me pause for a min. His argument was keeping a simple equity/cash bucket system between 80/20 - 90/10 had a higher probability of success long term than say a 60/40, specifically if your 40 holds bonds. His point was average bear markets recover on average of around 3 years so if you pull from your 5 or 3 yr cash bucket during a bear market you should, on average, be fine. Of course, my argument back was what about getting caught in the exceptions... say 2000 or 2008 (8 and 6 yrs to recover, depending what source you use)? Additionally, his point was while equities were more volatile, they clearly have more growth potential and bonds have limited room to move except down in the current interest rate climate. Further, he argued even if you wanted to protect for the worst 8 yr recovery, it would put your AA closer to 70/30. So, does this make a real argument for a long term AA no less than 70/30??