How can I prevent myself from losing faith in myself and humanity?

Lately I can't help but notice just how sad I feel, it mostly comes from how I have been treated by people outside of my family my whole life. In middle school, I was always picked on and teased and in Junior High School and High School I was teased more than would have been okay and was an extreme outcast since I had trouble fitting in and wasn't really welcomed or treated very well by my clmates. I thought college was going to be better but I find everyone to be just pretentious, self-serving,rude, cowardly, and in some cases cruel. I have only found a few good people that have shown generosity and earnestness towards myself and others, people who weren't pretending to be something they weren't or treated others like they were beneath them. I had experience as an RA and that allowed me to see the darker side of college students, and it never helped that I found no fellowship among my staff. I have always been an outsider and have had trouble fitting in and conforming to those standards/beliefs or behaving like they do. I have come to accept my responsibility in my set-backs and my life, I always own up to my mistakes but not many other people do. I find it depressing that our culture glorifies these people and forms of entertainment like "Jersey Shore" or other garbage like "Twilight" or "Beastly". I know I'm sounding whiny or like I look down my nose at people but I don't. Things like these keep me up at night and how people can be so cruel to one another on a daily basis or how we can just say other people's problems aren't our own. Where has humanity gone or the concept of it? I lose faith in myself because I feel as if I am doomed to end up as that or end up going the way I am now. That I will not be able to fit in or become sociable enough to be welcome in any group or circle. I have tried to blend in or fit in in many groups I have encountered and nothing works, and I find myself back at square one. I know this has been long but I apologize.