I earn £50k and have a very good work life balance. I plan my own diary, work flexibly, I work 37 hours a week but can work them when and how I want, I mostly WFH. I take the kids to school every day, and from the school gates twice a week. Since WFH it's been much easier to fit exercise etc into my diary. Never work weekends, very rarely work evenings unless I'm trying to build flex for a day off.
Civil service.