I wouldn't be able to do a WDR that will prevent my portfolio from evergrowing. I grew up poor, so I've been scarred from financial insecurity. Having a portfolio that can sustain me forever even if I don't live forever is a must for me, the portfolio after we are gone will have a purpose anyway.
I know you wrote in a later post that this is non-negotiable for you, but I'll say it anyway: I think you'll have a much better life if you do the personal work to get over the scars and trauma rather than create such a defensive financial setup.
For one thing, you'll never have enough money. You're already very conservative but it's always possible to come up with scenarios where the money fails you - theft, scam, divorce, death, addictions, bad investments, market failure, zombies, asteroids, dementia, societal failure, kids go to super expensive schools or fail to launch, etc.
On the other hand, if you have personal resiliency then you can navigate anything that comes your way. Not to mention that personal resiliency helps in all areas of life, not just financial: it could improve your health, relationships, and overall life enjoyment. Life is more fun when you're relaxed and confident rather than stressed and anxious.
But I am more curious to know if there are others who has executed exactly (or close to) what my plan/goals are, with their portfolio lasting them in perpetuity as the key objective. I would love to here from these individuals.
I retired 10 years ago at 46 with three kids who were in high school or early college at the time. I've had approximately a 1% to 2% withdrawal rate during the past decade, and I'm currently sitting at about 1% for my general expenses. My portfolio has grown about 3x even after a decade of expenses (including the private high school and college for my three kids).
There are plenty of other folks here who have done what you're asking, either on purpose or by accident. Most people here are conservative enough and their portfolios have grown since retirement even if that has not been their primary goal.
Many of us, myself included, have ended up in this position simply because of conservative planning (like you're doing), decent market performance, and a general feeling that we don't need to spend any more even though we could.
As to your most recent post, it's working out fine for me, although personally I'm trying to find good ways to spend and/or give away more rather than build a stronger financial moat. I've spent quite a bit of time learning to manage my assets because I believe I have a responsibility to do so. I also have an ongoing project of preparing the next generation (my kids) for the money they'll likely inherit.