and the original superboy story where the parents died involved time travel. hardly a grounding story where he learned humility.
The 1963 Superboy story in question is hardly the "original" version of the Kents' deaths, and it isn't the one that people remember when they think of how Superman lost his parents. For that, check out The Origin of Superman from circa 1949. I'll post a scan later, if I can find it.