The current post-covid slump is worse than the Great Depression, and has similarly lead to wars and deaths comparable to WW2 combat casualties (not holocaust/pogrom level cleansing yet, although Israel, China and US/ICE have made some respectable efforts).

Vietnam was 20 years long, but the Ukraine war is already comparable in number of casualties.

Gen X Iraq is comparable to the war in Afghanistan.

But I’ll give the Greatest Generation some leeway, the Spanish Influenza was much deadlier than Covid, and they also had to live through the two world wars. That’s comparable to the Millennial experience (especially if we include HIV/AIDS pandemic), and we don’t yet know if the Millennials will experience a similar subsequent rise in life quality and wealth accumulation.