I think you are being facetious. . . ;^)
But if you're not. . . Then your theory is? FDR ended the depression? The tooth fairy? Aliens??? The industrial infrastructure in the USA was destroyed by? What? Every trained machinist forgot what he/she learned making weapons? The growth in technological knowledge was thrown away because it wasn't needed for the war effort?
Add the economic stimulus of postwar rebuilding Europe and Asia. Investment, raw materials, and JOBS had to be produced over the next two decades to repair the damage. That put the world on the western side of the Iron Curtain to work. . .
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I’m arguing the depression end during the Eisenhower years.
People’s standard of living didn’t rise during the war. They went through all sorts of privations.
People who argue WWII ended the depression are arguing that war is an economic positive. Exactly the opposite is true. It is a gigantic sink.