We’re 50/45/5 (the 5% is a speculative investment), which has been pretty conservative for us in our 50s. I hope to be brave enough to have a more AGGRESSIVE equities allocation starting age 70 in proportion to what full SS replaces on the fixed income side. If we’re still around 50/50 AND have 30% or so of our income from SS, AND significant home equity, and maybe a little enjoyable w*rk income, I worry about being invested too conservatively in the face of longevity risk.
What I really hope happens is the 5% risk investment works well and changes the game entirely. Plan B!
Michael Kitches showed the logic of a more conservative allocation in the decade before and after retirement to manage sequence of returns risk, followed by a more aggressive allocation later to address longevity risk.
https://www.kitces.com/blog/managing-portfolio-size-effect-with-bond-tent-in-retirement-red-zone/
To be sure, he wrote that piece in 2016 and I’d guess he would not have many takers this decade, the way bond funds have fared.