Me, a year ago. I moved to his country 20 years ago, and we have three dcs that were born here. He'd never ever let me take them to the UK, so I'm stuck here until my youngest dd is 18. After that, I'm sure I'll go back home, and the kids will choose for themselves where they would like to live. All my family are in the UK, so I'm pretty much alone (I've got a few good friends I can ask for help if I need it).
Despite all that, and despite things being pretty tight financially, I'm so much happier now. My kids are happy, well looked after, well fed. We agreed at the start of this to put them first, and I think we've mostly managed that. I don't like him much at all, but I deal with him daily for the kids' sake. We share custody. He nitpicks and bitches about money. He's bitter, and he blames me for his shit life, but the kids don't see that. He can be civil to me when they're around.
My house is calm, clean and tidy. I can stick to a budget and haven't been overdrawn since I got my own bank account a year ago. When we were married we were permanently in debt. He still is, as far as I know.
People often tell me that I'm brave because I kicked him out, despite being alone here. I just realised that life is too short to spend it being miserable with the wrong person.