High expectations

Why do I have high expectations of people? Why do I compare them to me? I'm a great F-ing person!!!! I'm the type of person that puts others before myself. I trust people to do the right thing. Boy, was I let down this weekend. Running with a group of people, I tripped, fell, tore my hamstring, busted my knee and face. Everyone continued running right around me. Nobody helped me up, asked if I was ok. Not even the police officer that was watching the event within reaching distance from me. I would definitely stop and help someone out. I ended up in the ER. People are assholes. I'm tired of living in Fairy Tale trying to see the best in people. I'm tired with being let down. 😡