Like another commentator, I believe index funds are going to be ripped hard and this is what the average saver has been told to dump their money into by the banking industry since the last crisis.
[1]: https://www.forbes.com/sites/sageworks/2012/09/21/private-co...
The mistake that index fund adherents make is that there is no such thing as passive investing.
Certain market participants have been screaming about this fact to anyone who will listen for 2+ years now.
There's an alarming amount of overlap between the groups: "claim that passive investing will underperform," and "make money when people actively invest."
Furthermore, how exactly are "passive investors" going to take a bath? They're simply making a very long term bull market bet; if DJI drops 50%, it's the active investors that might sell at this price, but the index funds will just keep their position until (and after) it recovers, the only case where they'll lose in the long run is if the DJI drops permanently and that doesn't seem plausible outside of ww3 scenarios.
Buy low, sell high; not the other way around.
I mean, that's the goal. Of course, it doesn't always work out that way, but you don't plan on selling at the bottom and buying as it recovers.
This is sorta enshrining survivorship bias in your premises - take the largest economy around today and point out that every time it's crashed, it's recovered. Well, if it hadn't, there wouldn't be anything to point at.
There are actually plenty of examples - even among European settlers of the Americas - where the economy did not recover. The Continental Congress and the monetary system setup under it failed through hyperinflation, leading to the expression "not worth a Continental", and then the country had to be rebooted under the U.S. Constitution. Similarly, plantation owners in the Confederate States of America were totally wiped out - not only was the currency debased, the infrastructure destroyed, and the plantations burned, but the whole legal framework under which the plantation system operated was rewritten.
I guess I should add the clarification that I think most folks who consider themselves middle-class and who are investing and saving money are actually working-class.
If you don't own your residence outright or have the liquid assets to purchase it and still make investments, you are working-class.
If you live in the valley and can't afford to buy and can't uproot your job to somewhere more affordable to buy while maintaining roughly the same income level, you're working-class too.
One can make a strong argument (even from marxist sources) that even the marxist revolutions were mostly directed by the middle class; most of the marxists call it the intelligentsia, but these were mostly educated men at a time when that meant more than it does now. (and even now, I think most people consider a good education enough to make you "middle class" even if you don't make that much scratch.)
I mean, all this depends on your definition of a "revolution" and of "middle class" - if I define "middle class" as "powerful or educated enough to get something done, while not being super rich" and I define revolution as "overthrow of the government by people who aren't already at the top of the power structure" then it almost becomes tautological; if people are powerful enough to start a revolution, by that definition, you are middle class or better, and if an elite starts a revolution, by that definition, it's then a coup.
(I'm not suggesting those are your definitions of revolution and middle class; just that the definition of those two words (and the definition of those two words is kinda fuzzy) makes all the difference in this question)
(but now it could be said that I'm changing the definition of elite to mean someone who has so much capital that they don't need to work. Still, I think that in both those wars, some of the leaders were also some of the richest people around. I'm also using a right-ish definition of revolution, especially in calling the ACW a revolution and not a reaction. I personally feel that 'reaction' might be reasonably applied to the ACW, at least, just because it was a clear attempt to roll back what would be called, really then and now, progress.)