The common cultural fear is to “run out of money in retirement”, but the evidence suggests that the opposite (i.e. growing your wealth in retirement) is far more likely.
For example, Michael Kitces
did an analysis where he discovered that retirees following the 4% rule in a 60/40 portfolio were
more likely to 4x their wealth than deplete any of their principal after 30 years. In other words, if you started retirement with $1 million in a 60/40 portfolio and withdrew 4% a year, your chance of ending up with $4 million was
higher than your chance of ending up with under $1 million after 30 years. This result seems absurd, but only because we have been bombarded with the
opposite message (i.e. you will run out of money in retirement) for so long.