>Expected compound interest is not high enough to justify the risk of a catastrophic crash That's just not the case. It may be a lower yield world, but you can

>Expected compound interest is not high enough to justify the risk of a catastrophic crash That's just not the case. It may be a lower yield world, but you can still find companies with relatively stable and growing 10-15% cashflow to EV ratio even in the US. Outside of the US old-school "easy" Value is still very much alive as well. What you were advocating for is market timing, and market timing demonstrably does not add alpha unless it's done very mindfully, mostly because the opportunity cost of sitting out is great. If you look at core alpha sources through a factor lens like trend following, most of the profit comes from participating in the big trends (read, most of the easy returns come from "expensive" getting "more expensive/"overbought"). From another lens that takes into account fragility/crashes - vol trading - selling vol is paradoxically highest sharpe when vol is low and most vulnerable to severe disruption. Part of what you're disregarding is how market participants are far more sophisticated today than they were even 20 years ago. If you're building a 60/40, it doesn't look attractive, but even accounting for survivorship bias, the baseline has risen. The "crash case" remains relatively similar when it comes to portfolio planning - you need to prepare for 60% crashes, and 10-year "lost decades." The tools to manage that equity risk and still access smooth returns are far more powerful and accessible than they were in the past though.