You can take a 4% draw based on any 50 year period in the past 100 years. It is not risk free correct. There are many books and articles on the topic that are not worth trying to fit into a comment.
For most people, being able to retire and never work again with 95% certainty enough, especially when tweaking consumption and tweaking side income are easy knobs to turn. No reason to delay retirement 20 years to be 100% confident. Raises the risk a lot you just die before you retire.
For most people, being able to retire and never work again with 95% certainty enough, especially when tweaking consumption and tweaking side income are easy knobs to turn. No reason to delay retirement 20 years to be 100% confident. Raises the risk a lot you just die before you retire.