Critical thinking

When I declared my major, the first official class was Critical Writing.
In hindsight, I don't recall being critical, but I remember writing on novels, plays, poetry, and essays. I wrote a few papers, and I was glad to turn them in and to be done with them until I could resubmit for an improved grade.
English was my weakest subject in high school. It wasn't a competitive subject, so I didn't really try as hard.
I never felt the need to read a book outside of school until I was 15. I liked various comic books, but I was never into them like the fan boys you see on  Big Bang Theory. It was mostly in response to collecting the Marvel Universe cards or to the Tim Burton Batman movies. I liked Frank Castle and The Caped Crusader the most for they didn't have superpowers and had a cool costumes. Dolph Lundgren and George Clooney ruined the characters as far as I was concerned.
I ceased following such things until X-Men and Spider-Man came out when I was an adult, but I never bought the books. Collecting was over-rated and over-priced. Like all good things, Marvel movies ruined  themselves with over-hyped titles.
Comic book heroes are different than when i was a kid. Story lines mean nothing. Watching Batman: The Brave and the Bold has introduced me to characters from DC I never knew existed. Seriously, I didn't know there were three different Flashes. Doesn't matter, I guess with them being fantasy, but there's something inherently wrong with George Lucas re-inventing the Star Wars Trilogy by digitally enhancing thus destroying my childhood memories.
I learned in English 273 that Star Wars was technically a Western. As a child, it was simply a story that was cool, but as an adult, I could think of it critically. Over thinking a movie based on nothing is another way to kill one's childhood memories.
When is too young to develop critical thinking?
Regardless of thinking critically or not, I have no interest in seeing The Avengers. I never got into Iron Man, the Hulk, Cap'n America, or Thor, but I wouldn't mind seeing the Marvel Zombies made into a movie.