I don't understand what people get so confused about.
Nergal is the god of Death and Destruction, it's only natural that he'd be against any form of resurrection (even if only in the form of mindless zombies),
And so not turning corpses into mummies would be rude? That makes absolutely no sense.
Official Incense Aroma Specialist for the Vaarsuvius Fan Club!
English isn't my primary language, so please let me know if something I'm saying doesn't make sense!