It can take years to rebound from a very stressful period. I'm sure this is what I experienced years ago when I quit a very stressful and generally bad job. Just years of not feeling particularly interested in anything, being alienated, etc.
At the end of the day, those that are close to me tell me it was the right choice and I do feel like it was to get out of a hostile job that up until the last few years I truly loved. The loss of some of my closest coworkers has been hard — but connecting more with my family has been lovely and made me realize how much I was missing in the pursuit of “work.”
I'm glad that you found a silver lining in your terrible experience by connecting more with your family. Unhealthy workplaces really tend to distort our priorities in life.