why are people so rude? :(

why are people so rude? is it because of their insecurities? is it because they are just plain mean to me because they don't like me? i just don't understand where people get the idea that it is okay to be rude and mean to me, what did i ever do to them? yesterday was just one of those days it seemed like everyone had ganged up and decided to be mean to me and only me, i know that's probably not how it really was but i had gotten some bad news that day and then i had a headache, and just felt all around hurt. i think that people are rude because they think by being brutally honest they will hurt me but the truth of the matter is i would rather find out the truth from them and just hear it straight forward. hearing the news from someone else just make me sick to my stomach knowing that i haven't been told the whole truth, it really hurts. this rudeness could be handled with in a better manner, but it seems that they think by not tell me the whole truth they were protecting me from getting upset but the truth normally comes out one day and the pain just hurts even more knowing that a person you care about can lie to your face and keep it from you for more than a minute. then i went to soccer and thought well i can take out some of my anger here, but i was dong terrible at practice and couldn't even get a good touch on the ball making my mood even worse and then going into this aggressive drill i got nailed in the face about 4 time with elbows. i seemed at the time that my teammates were doing this to me on purpose, but he truth of the matter is they were just playing aggressively and my face just so happens to be next to their elbows causing my face much pain, and my head to hurt even more. so to answer my own question i don't think people are rude on purpose, but to me yesterday that's what i thought when all these things were happening to me. some people may be rude because they are insecure or just don't like me but that hasn't really occurred in a long time, since middle school. people are who they are and the only person or thing that can make them change is themselves and this takes time, and commitment.