Our portfolio is a lot higher now than it was at the peak in 2007, before the 2008/2009 drop.
A few years ago I started modeling my portfolio asset allocation to answer "what if" questions about various levels of market selloffs and how they might affect me. I had the drops in 2007, 2008 and 2009, and some data of how my asset classes and retirement fund performed overall during that period. As the markets and my portfolio reached new highs over the past few years I used that to model various corrections and bear market scenarios, including the worst of the 2008/2009 period.
This just let me guesstimate what the portfolio value might be after various scenarios, which then translated to what I might expect to withdraw after such an event.
One of the scenarios I had modeled was the S&P500 down 12% from its peak, and I had estimated that my portfolio would drop about 7.33% from its peak.
Well - we had a real world version of that today. The S&P500 is down 12.3% from its peak, and my portfolio dropped 6.76% from its peak.
So - my portfolio did a little better than the model, but my models weren't off that much either.
I can also see how much I would have to "tighten my belt" if we had a repeat of 2008.