Yeah, nostalgia does help some, but it really is a good movie in its own right, plus I don't see why superhero movies have to be serious all the time. I mean, would grittiness and fewer jokes improve Back to the Future or Ghostbusters? I used to do it too, complain about superhero movies being too campy, but anymore, I just don't care that much. Superheroes don't have to be so realistic that I can believe everything happening is physically possible and villains don't all have to be as chilling as Hannibal Lecter(though I'm perfectly fine with creepy villains too).