Your situation is a tough one. I cant imagine living together so long in that state. You are a strong person!
At this point, I think I would be ready to have that conversation as well. However, that is completely personal and up to you. If you think you are ready for a divorce do it. If you still have any doubts or uneasiness I wouldnt do it because it seems like a sign you arent truly there yet.
Good luck either way!
W 34 Me 42 Married 7 years together 8 0 kids 1 beloved dog BD 4/6/2018 I moved out 4/7/2018 I moved back in alone 8/05/2018 I file 3/06/2019 D official 5/7/2019