Dear "Another Day Down" ~ Bless your heart. I know it can be so very difficult, and some families are TOXIC. If yours is toxic, then by all means, distance yourself. You don't have to be made to feel "less than." You don't have to take ANY KIND of abuse from ANYONE -- not even family.
Just because they're our family and society SAYS we're supposed to "love" them is a bunch of hooey. When they're treating us as 2nd class citizens, we don't have to do anything. We wouldn't take that kind of treatment from our friends, so why take it from family? Toxic is toxic, and if they're hurting and berating you, then stay clear of them. Perhaps at some later date, they'll see the error of their ways. But for now, you don't need it.
I wish you the very best my friend, and I hope you feel NO GUILT from any decision you make. You shouldn't. It's their actions that have brought you to this -- it's nothing YOU did. So you, your husband, and children enjoy your lives and don't worry about the rest. God bless and please take care. Hugs, Lee