My mother is disabled and I don't want to care for her.
Is there a reason you don't want to care for your mother, who is disabled?
My mother is only making my life worse, she is very degrading towards me.
Taking care of people who are disabled is difficult especially if they are troublesome and mean. But they do need care, if you are not able to do it you should make arrangements to have somebody else do it.
I don't care about her, I think.
You should care about your mom, especially because she is dealing with a disability. I understand that's difficult for you, but she needs your love and support. It might be rough, but put yourself in her shoes and think about how you would feel if no one cared.