Hey married to a JW,
If I didn't know better I'd say you are my dad, your story sounds exactly like my family. JW mum, very opposed dad. So maybe I can help a little bit by telling what happened in the next 20 years.
All of us kids left the religion in our 20s, and we gradually established some sort of relationship with my dad.
At 70 years of age my witness mother left my dad ( after 44 years ). This was allowed because I think she felt the marriage jeopardized her sanity. They Hated each other and have never spoken again.
They are both so much happier, particularly my dad. You'd think at 70, why bother? But he has made so many friends and is finally having the social life he deserved to have. We haven't spoken to Mum for years, she is entrenched as a JW.
I deeply wish that my dad had left when he was younger, why?
When I was a kid I used to look at dad and see how angry he was all the time, yelling, scathing about the witnesses. This played right into mums hands as she constantly told us this was sadly an example of his worldly ways. Now I see how impossible it was for him in a house run by a JW, nothing like a normal family. When I asked him why he stayed, he said " to provide an alternative for you kids".
I respect this reasoning, but I think what we needed was a rational, sane, calm adult providing the alternative, not anger. I also hated seeing the sh*ty life that he had. Kids want to see their parents happy!!!
I'm sorry if this next part sounds extreme, but I haven't got much time so I'm going to be blunt....save yourself! Get yourself a life! Be happy! Maintain contact with your kids......that is the greatest gift you can give them. Let them know you are there to talk to. It sounds like you have had a really bad time, your kids will be lucky to have a close relative who is not a witness, you will be there if they need you! Good luck!!!!!!