I totally understand the feeling of it being easier to carry on in some ways, but there are risks involved in that choice.
How old are the DC? Parents do shout at time, but not all the time. Is the shouting aimed at you or the whole family?
Bills could be a challenge, I don't deny it, but the mental freedom that comes with it makes all that worth while, however difficult.
The thing is only you can make this choice, it's easy for those looking in to pass comment but again, if this was your child in a relationship like yours what would you say?
Children who witness abusive behaviour are more likely to be a victim or perpetrator in the future unfortunately.
I'm sorry you are in this situation, please, chat to professionals, the women's aid link have a chat feature, the first link has a physical helpline. Raise your concerns, at least get advice before you make a decision? Knowledge is power, & you can do this.