I saw this article and thought it had some good points in it that you can gain some insight from. If your marriage does end up in divorce, it would be beneficial for you to see the mistakes that happened and think about "if" you eventually find a new relationship how to make sure you don't make the same mistakes.

https://www.theguardian.com/lifeands...o-an-early-end

It would be helpful for you to do some research that might help you make a decision on a more logical level instead of feeling like you are doomed to suffer emotionally the way you are now.