Am sure every kid look up to their parent in their formative years.
If my mum was to be in an abusive relationship, the best she could do for me is to see how best to resolve the abuse or better quit it completely for her and my good.
If you have a daughter and she grows up in such environment, you've just ruined her future, cos when she grows, she would act like you and may end up in a bad marriage and decide to stay for kids and it becomes a vicious circle.
Talk to your husband sincerely and hope things turns out fine.
I so believe everyone in life deserves better than they receive. Your kids deserve more. Save their future from such abusive home.
More importantly you deserve love. Wouldn't like seeing you looking 60 when you not even 30.
You need a healthy and lovely life, if your husband is not giving you that, you demand and deserve that.
No harm in taking a break and possibly leaving with kids for a while till he returns back to his senses. Plus you could start by talking to his family members or his closest friend or a model to him, a person he respects so much. You both could just reignite and get back to being the best couple ever.
But above all, you deserve love and your kids deserve to be brought up in a home where love is always in the air. You owe it to them. Don't be afraid of the uncertainties of the future. Nature has a way of taking care of her own when fighting a good cause.
All the best Wallace. Keep the family here posted on whatever outcome you take.