I remember staying at work late b/c I just hated the idea of going home. How awful. Now, I run out when it's time to leave, my home is my sanctuary.
I too came from a long line of people who don't divorce, no matter what. However, no one was critical of me, they have done nothing but support me. I look back and cannot believe I stayed for so long, but I am mentally in a very different place than I was then.
I can only say, you are worth it. You are worth having a happy life, being able to have fun, being able to look forward to the next day.
Big hugs.