NC for this, but I've been here for years.
DD told our 16yo DD he wished she'd never been born.
This, after >20 years of EA towards me.
I was used to it. I could take it, or so I thought. But DD was going to be an adult soon, and I thought, ok, it seems he's going to start doing the same to her, and that broke me. She'd spent all her childhood watching him treat me badly.
I couldn't put up with it anymore. I couldn't see myself spending my old age with him. I needed to make a change. I needed to promise DD that things were going to change, and I was going to follow it through. And I did. It's my proudest achievement.
DD has since left home for uni. Before she left, she spent part of the week with me, and part of the week with her dad. She has felt she's able to stand up to her dad now. He doesn't like it when he's being told he's being an AH but he's realised he's lost a lot of power with both of us.
DDs grown up so much. She didn't go far, so I see her on a weekly basis. Our relationship has improved, so so much. I'm immensely proud of her.