A lot of economic growth also came out of World War II, but this isn't something we want to repeat.
It just doesn't work like that. WWII was value destruction at a massive scale. All that industry could have been building industry and we'd have had the 50's and 60's a decade earlier but not just for the US.
While the US is conventionally excluded from great power analysis (the preceding form of superpower analysis) due to its noninvolvement in European affairs, it was unquestionably one of the major economic engines of the world in the era before WWI.