I've never been married so I cannot speak about divorce from my perspective. I did however walk away from a relationship recently. I am sad to say it was my own fear and denial that was the reason. I was in denial of the depression I had fallen into. I had been engaged to the girl of my dreams and sadly I began listening to what OTHER people thought too much. We had been having problems because I live in England and she lives in New York and the immigration process was taking a very long time. The Lawyer we employed had made mistakes and cost us a lot of money and slowed the process down. I will admit here that I allowed other peoples opinion of how much it should have cost cloud my thinking. Yes it cost more than he told us but If i could have redone those last few months with the point of view I have now. I would have done things differently. I hope I can talk to my ex-fiancee and put things right. I know depression is not an excuse! I will get the help I need. I just hope I get the chance to fix my mistake.
This is a bit of a rambling answer, but .... The main reason I left my relationship was fear and depression. So if anyone ever finds themselves afraid in a relationship please take my advice. Talk to your partner and seek help from someone who is qualified. Don't make my mistake of thinking friends or family can see the issue clearly. I love my family but their first instinct was to protect me. And instead their advice has hurt me as I lost the woman I love.