Your job sounds very much like one of my previous jobs which I stayed for only 1 year. Long gruelling hours, except that I didnt need to work on weekends. Career opportunity was quite good also but I did not want to lose family time just because of my career. Five days a week, I reached home, showered & went to bed, didnt have much time to chat with hubby (that time no kids yet). Even when he initated a conversation, I would cut him off.
It was totally unhealthy......
Not sure if you really need such a demanding job, but my advice is you should put your family first. End of day, it is only your family who will stand by you, if anything happens, e.g. fall sick.....company won't care, you quit, they find another replacement....BUT if you lose your family (i.e. less bonding), you may never repair the "broken" bond.
Have a talk with your husband, financially if you dont't need a high-pay job to sustain a certain standard of lifestyle, then consider switching to doing something less demanding, regular hours, more worklife balance.
Hope my above points sound reasonable, do update me when you have achieved worklife balance.