Help! Any advice to help me go on in my life??

My parents are divorced, I have one brother from the same mom and three siblings from my father.
I live alone with my mom and brother.
I have schizoaffective disorder..
My family hates me.. They've said it many times (I'm making them sad and unhappy)
They feel ashamed of me.. Saying I have to stay at home
They're fighting because of me.. Every time
They are sick because of me..
I admit, I loved them but they didn't.. Ever!
I only want to wish them happiness ever after..!
They keep on telling me that am useless and worthless
This feeling kills me..
I wanted to run away but I have no place to go
For them, am just a burden on their shoulders trying to get rid of

Any help??