Stocks, deposits and currencies can all crash to zero while your primary residence never goes below the value of housing your spouse and kids (which is pretty damn high as far as I'm concerned). Some rental market will exist almost always but that's not necessarily true for your job and your savings.
My parents lived through times like this and so will my descendants eventually. The probability of this happening to my generation is low but non-negligeable so I find it necessary to hedge against.
your house is never truly yours. What happens if you stop paying taxes and HOA for example? You can never fully hedge against everything, live with it.
There are no certainty in life and thinking that a house is yours forever is an illusion.
Nothing is certain of course, but I estimate the probability of someone taking your house to be significantly lower than the probability of someone taking your savings and stocks. Therefore I prefer to have at least one permanent residence at all times.
I base my estimation of probabilities on the crises I either saw myself or know well from the past. To add to the picture, the majority of stocks I've bought prior to 2022 are frozen with a chance of me never seeing them again. I'm rather glad that at the time I've had enough alternative assets to be able to relocate my family to another country and provide consistent quality of life throughout the whole process.
So yes, I can't fully hedge against everything but I see no reason not to hedge against the things I can.
My parents lived through times like this and so will my descendants eventually. The probability of this happening to my generation is low but non-negligeable so I find it necessary to hedge against.