Maybe I didn't really like being married?
You probably didn't like being married to a selfish asshole. Neither did I. When I kicked ex out I felt relief. I couldn't sleep and barely ate for months and the gaslighting, TT, blameshifting and lying made life hell. When he left he took all his giant piles of bullshit with him and in that moment, there was peace! After not sleeping more than a couple broken hours a night for months, I fell asleep before he had even finished packing his bag and I slept until I had to get up to take my kids to school. I spent that morning thanking God that the bastard was out of the house. Although I was scared to death, I knew that the worst was over.
Marriage to a functional and faithful person is likely much different than life with a selfish bastard turn cheater. If not, I would think the divorce rate would be somewhere around 99%.