The plot is almost always some approximation of the following: a bad guy, maybe a crime boss, more often a powerful supervillain, embarks on a project of world conquest, destruction, theft, extortion, or revenge. The hero is alerted to the danger and figures out what’s happening. After trials and dilemmas, at the last possible minute the hero foils the villain’s plans. The world is returned to normal until the next episode when exactly the same thing happens once again.
It doesn’t take a genius to figure out what’s going on here. These “heroes” are purely reactionary, in the literal sense. They have no projects of their own, at least not in their role as heroes: as Clark Kent, Superman may be constantly trying, and failing, to get into Lois Lane’s pants, but as Superman, he is purely reactive. In fact, superheroes seem almost utterly lacking in imagination: like Bruce Wayne, who with all the money in the world can’t seem to think of anything to do with it other than to indulge in the occasional act of charity; it never seems to occur to Superman that he could easily carve free magic cities out of mountains.
Almost never do superheroes make, create, or build anything. The villains, in contrast, are endlessly creative. They are full of plans and projects and ideas.
The supervillains and evil masterminds, when they are not merely indulging in random acts of terror, are always scheming of imposing a New World Order of some kind or another. Surely, if Red Skull, Kang the Conqueror, or Doctor Doom ever did succeed in taking over the planet, there would be lots of new laws created very quickly, although their creator would doubtless not himself feel bound by them. Superheroes resist this logic. They do not wish to conquer the world—if only because they are not monomaniacal or insane. As a result, they remain parasitical off the villains in the same way that police remain parasitical off criminals: without them, they’d have no reason to exist.