Jeremy, when I first got sober I hated myself and everything and everybody. It hurts at first. It can suck when you no longer have the safety of alcohol and your fantasies and delusions. I don't have schizophrenia, but I do understand delusional thinking.
I know it must be killer hard for you right now. I hope you let the part of you that wants things to be better win out over the more comfortable and familiar parts though.
We all were on shaky, new ground in sobriety before we ever grew into things. Please give yourself a real chance here. Rehab is NOT the end of the line. But you need your head on straight in order for any real change to stick.