Out of your poll choices, I'm pretty sure I realized that Santa wasn't actually real by the time I was 5 or 6. I still wanted to believe there was a magical jolly fellow flying around the world in a sled delivering presents to "good" little children, and all, but I had some serious doubts.
I never did think the opposite sex was bad, and I learned that life was not "fair", long before I ever saw a pro wrestling match on TV.