I mean everything on this earth, such as money (except the bare minimum you need to survive, and care for your family) means nothing and everything else means nothing (in a good way, not a nihilistic way.) A sense of what's important. None of the stuff of this world is important (though it might not be easy to feel that way sometimes.)
Seventy years versus eternity.
I'm sorry, but no. Hard no. Even if you believe there is something after death (I don't), how is it EVER justified to sacrifice not just yourself but the wellbeing of your children and their entire future by staying with a dysfunctional and abusive partner? How can anything and anyone justify that?
Aside from that, if your god wants women to suffer for decades by staying in an abusive relationship, he's a sociopath. Stuff isn't important, I agree with you on that. But safety, joy, happiness? They are worth everything. And no relationship should ever be the altar upon which those things are sacrificed.
This is why religion is so often utterly toxic for women.