I got out of an eight year relationship and was engaged, so not divorced, however, a lot of people don't even make it that long.
Ex background:
--Parents were divorced for over 15 years, so primarily raised by a single mom. Mother has been married five times. Children with four men.
--Ex was college educated, with a great career
--Polar opposite of me. She was not outgoing, socially awkward, but polite.
We started dating our freshman year of college. Dated for 6.5 years before I proposed.
It was sudden. Both of us had flaws, but I ended it.
Things that bothered me the most were the fact that money always felt like an issue (Penny pinching to the extreme). What I did, what I bought, etc. I have one strong hobby/passion, and I always felt like it was an issue. Harboring emotions or things that bothered her that I did.
Aside from that, I was always expected to go to every family event she had, but when invited for the one two per year for my incredibly small family, she declined (I'm tired, I have to work tomorrow, etc). She even found a way out of my only cousin's wedding. The final nail in the can was purchasing a puppy behind my back without really talking about it. Yes, purchased. I'm big on rescue animals and she knew it bothered me. Plus, our communication was horrible. It was not much talking, and a lot of Netflix. That's fine from time to time, but not forever.
We haven't had communication for a while, so I have no clue if we would be able to work things out, but in the meantime, I'm working on myself. In a way, I have found it to be liberating. But, there's many times I'd give an arm for another night just hanging out on the couch.
Things you take for granted sometimes bite you in the rear.