I'm so sorry to see you still trying to find answers to these unanswerable questions. You have a husband who's priority is not you or his family but his work. He's a work-a-holic and very selfish with his time and emotional energy to you and the kids. Sometimes I thought that he might turn about and realize how he is killing your spirit and his relationship with the kids, but the hope was very short-lived.
Are you willing to live like this until the kids are older? What do you need to do for yourself?