I'd say a financial crisis is the least of our worries.
However, a financial crisis -- let's say of the scale of 2008 but which is unresponsive to government intervention (or said intervention is handcuffed due to geopolitical factors) could see the average person's life change dramatically in the course of weeks, rather than years or decades. Supply chains ground to a halt, shortages of fuel and basic goods, social unrest . . .