I understand how you feel. No one will listen. No one can understand how you feel. The thing about it is that finding someone that wants to listen is very, very hard to do. I have had to just keep to myself.
It's hard when it feels as though everyone is out for themselves. Most people are. A little venting on your part is understandable. No one else would think twice about it so try not to let it bother you too badly.