Originally Posted by
Kerath
I find your reasoning pretty silly.
The fallen hero motif is as old as recorded literature (and probably older).
An otherwise good man, succumbing to a fatal flaw in their character and suffering the consequences (consequences which usually affect the innocents around them also) can be seen in works by Homer, Aeschylus and Euripides - which are well over two thousand years old.
People usually find it interesting because it humanises characters - Heroes are not perfect, they can and do make mistakes and others suffer for it.