Look after myself for a change

So I talked to my mom this morning, and todl her I was grasping at straws, because maybe I could tell the judge that my husband is mentally incompetent to file for divorce.
But after talking about it for a while, here is my conclusion:
1 - I don't want a divorce because I took vows that said I would be with this man until my dying breathe.
2 - I don't break promises, if there's anything I can do to help it.
3 - I feel it would make me into a liar, that I stood before God, and all my family and friends and said I would love and be there to support my husband in all things for the rest of my life. and I'm not a liar.
4 - I want to take care of someone.
5 - Mom says I always have put others before me, always put underdogs before others, and always doen everything I can to help other people, but always also forsaken myself in the process.
She says now is the time that I have to take care of myself. Could I probably have my husband committed, thereby becoming his power of attorney and not allowing him to divorce me? Probably, yes. But what would it gain me? Would my husband suddenly start loving me again? Would I have a happy marriage? Or would it be even worse than it was before, because I'd STILL be married to a man who doesn't love me, I'd STILL be miserable every single day, even though I had really good times with him I'd still be miserable too. I'd still be putting him and his daughter before my own health, happiness, and wellbeing.

Is there a good possibility that my husband has severe psychological issues above and beyond PTSD? Yes... I now think there is. I think he may be a borderline paranoid schizophrenic. His mother is very much schizophrenic... his mother's brothers and father have severe emotional issues, one is completely gun crazy, has like an entire arsenal at his home, i mean major amounts of guns and amunition... as in, he could put down an entire zombie army on his own, and not even break a sweat.

Is that someone that I want to have children with?
Is that someone I want to sacrifice my life for?

I just don't think so any more.

The only reason I am holding onto this marriage is because of the promises and vows that I made to him and to myself and to my family and friends and to God, if God exists.

Is that a good enough reason to stay married?

My mom says that he nullified our marriage and my promises to him when he refused to keep a single promise that he's ever made to me. That he nullified our marriage when he refused to stay with me, refused to try, refused to tell me the truth about things, refused to take any steps to show me that he loved me and put me before others. That it's ok if I divorce him, because in truth we have never been married, and his insanity or whatever it is, has nullified the vows we took, because he did not really understand what is required by a married man.

I am not sure.

I still feel as though his actions, and my divorcing him (or being divorced by him, whatever) have made me a promise breaker. a vow breaker. a liar, and a bad wife.

for isn't it my job as a wife to stand by my husband, to support him through trials and tribulations?
That is my belief.

Mom says it is nullified by his actions and words.

What is right?