Why is the Idea of Adults Expecting Others to be Mature so Irritating to Me?

[drizzleRomanceGirl]

I sometimes become extremely irritated with other adults when they expect me or anyone else to be mature. I understand why it's helpful to be mature, and I usually try to act responsibly and try not to cause unnecessary trouble for anyone. However, I detest when adults think the act of maturity is something that should be enforced. I feel like some people are trying to act like police officers and uphold maturity like it's their job. I even feel like I'm being judged and attacked if I don't act the way some adults expect me to act.

For example, I am really annoyed when teachers don't go over the material that was previously assigned for reading because they expect you to already know everything about it. It's even more irritating when a student asks his or her teacher something he or she doesn't understand about the assigned material after reading it at home, and the response is something similar to, "I'm not here to babysit you. You should have read the assigned material at home. Don't waste my time by asking stupid questions." I value communication among teachers, and I can't stand when teachers expect their students to understand everything they assign when these teachers haven't even discussed any of the material in class.

Thank you in advance for responding!