Danny Ocean said:
Sorry to be so blunt, but...
You're 15, what do you know about people? How many people have you actually met? From how broad a spectrum?
No apologies needed.
And I don't know many people, but the people I deal with every day don't seem to have common sense, self-control, or a sense of responsibility, and I dealt with nothing but violent idiots when I was in the public school.
I feel that you don't need to be of any certain age to understand that selfishness, judgement, hypocrisy, and violence are all in human nature (not that this is what makes me dislike humans.) A few humans act upon these traits to the extreme, and abuse, bully, rape, murder, rob, etc. others at some point in their lives, and end up hurting a lot of people. Some hurt themselves. Most humans do stupid things that have terrible consequences, and they refuse to take responsibility for what they've done. They also hurt other animals and the Earth around them because of a sense of self-entitlement. That coupled with their overall superiorty complex really gets on my nerves, and doesn't earn them any respect from me.
Note that this is just my opinion, and I'm not trying to inflict my opinions on to you, but you inquired, so I'm sharing.