Not husband, but a 16yr relationship, house, child...
As with many PPs, my only regret was not doing it sooner. I checked out of the relationship not long after DS was born and I stayed for a further 3 years.
When I told him I was leaving I felt nothing and had to bite my lip to stop myself from laughing when exDP started going on about how I was his best friend, he couldn't live without me, would marry me if thats what I wanted.
I do wonder whether I will meet anyone else and the thought of never doing so takes me to quite a dark place, however the fear of being alone was nothing compared to the thought of staying in an emotionally abusive relationship devoid of affection