Moral dilemma: do I seek spousal support?

While I was away at school trying to create a better life for us I discovered my husband had been cheeting since day one (12 yrs). He had also been verbally and mentally abusive and uninvolved with his kids, leaving me to raise them without his help (step mom) I even took two jobs to pay his child support. He is an alcoholic and a compulsive liar. But I hung it in there hoping he would mature. But when I discovered the cheeting and the fact that he seeks porn sites w/ what appear under aged girls I told him I wanted a divorce. But I told him I wanted to keep it friendly and that I wouldn't bad mouth him and that I would keep the disgusting reasons I'm divorcing him private if he didnt bad mouth me and tell lies to get ppl on his side while I was away at school, ruining my reputation. I later found out that he has been telling ppl that I cheated first (not true) and others that I drove him to it. He is telling ppl I was abusive of him and his children (mentally to him and physically to the kids!), he told ppl I am using him and draining his accounts (meanwhile I've given him huge loans from my student loans b/c he's drinking his money away). I've lost all my friends. Ppl are calling me a ***** and a piece of **** to my face! He denies everything. I want to seek support for the damage he's done, but b/c of his drinking and bad money handling it would cripple him. What would you do? He deserves it! But knowing the damage it would do to him, I feel wrong about it?