Having papers served is a huge leap, no doubt about it. Are you solid in your truth that your marriage is as toxic as can be?
Silent treatments, physical aggression and other women seem like solid reasons to me.
I think what's scary is the financial ledge of going from double income to single with childrearing costs factoring in. Another thing that I found challenging is the social fallout because there are those that judge without knowing. But eventually that wears off.
Have you at least spoken with counselors in the domestic violence circuit where you've been physically battered? They can be a good resource to at least give guidance.
I have no regrets, myself in filing and walking away. It hasn't always been smooth sailing, but I wouldn't want the path we were on ever again.
I had a lot going on besides the divorce. I've grown from this in ways that perhaps I wouldn't have.