DH and I are members of the same profession. Before we had children, we both worked all the hours the job took....
One of the DC has SEN, and and there were just too many appointments, meetings, etc, plus there was no childcare suitable for her in the school holidays. I respect other mothers' right to work if they want; but imo, it would have been a choice between career and getting DD what she needed - and we chose her, even though it meant we were worse off!
Since having DC, DH has always been self employed. I reason that I have always been there for the children 24/7 - if any of them were teething or ill all night, I got up to them! I dealt with all the paperwork, appointments, studied the law, dealt with the benefits system, etc for DD. If his suits need picking up from the cleaners in the week, I do it for him. Personally, I think looking after children is more stressful than work in our profession! If we had both worked and he had had to do half the nights, days off for sickness, appointments, etc; he would not have done as well as he has!
We both work the same hours; its just he gets paid for it and I don't, but he could concentrate on his career; and earned far more as a result! We have one joint account and everything comes out of that. There is no his and mine!
Ask your DH if he thinks, he could concentrate as well on his work, if he was up all night to a child with DV; especially if they all got it one after another? Likewise, taking days off looking after sick children, going to Sports Days, parents' evenings, appointments....Keep a record of how many hours you work in a week, including all childcare, housework, whatever and how many DH works - my guess is that you work more?