I think you might have missed the point on this one. People getting cancer from being near or even associating with Manhattan was a huge commentary on super powers in general. The idea that superheroes should and probably do always have the lingering thought that their powers might inadvertently hurt those they love or even those they save.Originally Posted by Killa-Eyez
Might Superman get distracted and crush the people he saves with his strength? Did the Goblin really kill her by throwing her off or did Spiderman snap Gwen Stacy's neck when he caught her with a web? Is there a possibility that the Human Torch might burn an apartment or girlfriend to ashes while having a nightmare?
If the powers are something like radioactivity, then the fear is only greater because of the lack of obvious effects until it is too late. This is kind of material usually used in origin stories about supervillains who lash out in their grief.