Since I've been in an actor, I've lived in Italy, in London, in Stockholm - I had the fortune of working in different locations. If you live someplace long enough, you acquire slightly different systems of thought, and it influences your outlook on life. I just slowly adapted the way I speak.
I'm a very big believer that the reason you've seen this huge surge in superheroes both on television and in film is. . . part of it of course is zeitgeist. There's no denying that there's a huge appetite on the part of the audience in both TV and film for these kind of adventures.