Relax Birdie. It's a trend, as science fiction was, as Rosmary 's Baby/ The Omen/Exorcist was, as Western's were. The market and the quality of the product will determine how long this lasts.
Of course, these are troubling chaotic times and people enjoy seeing heroes. Why else the slobbering love affair with celebrities in this country? Used to be Charles Lindburgh was a hero, Audi Murphy was a hero, JFK was a hero, MLK was a hero, MLK and John Glen were heroes.
Now we worship the Kardassians and elect Presidents who play Saxaphones or sing on Late Night TV.
Right now people feel a need to be inspired. Is it so bad that a large number of them are inspired by superheroes? If you don't like the stories out there, right a better one and get it made.
Jet Beetle did.