I'm not certain if I've posted to this thread or not, since I'm not post much anymore. I can't give you any better advice than you've already received so ill just mention my own experience.
I was married 27 years at Dday#2, where I learned the truth. I had loved my wife, not because she deserved it,but because I had taken a vow on my wedding day. Before Dday, she asked why I loved her, and I told her that I had chosen to, the I stitched my life to hers and was committed. I don't think that was the romantic pulp fiction version she had read in her romance novels,but those are bullshit anyway.
You see, I loved my wife even though she had many shortcomings. I carried the things she could not, and most times, my load was greater by many times. But I did it because that's what I felt men ought to do.
After Dday, I switch flipped in me. She had effectively erased every positive attribute she had and all I saw were liabilities. I no longer loved her as i once did and if she were ever to recieve my love again, she would need to be worthy of that gift.I gave her 6 months to prove to me that she could do the work, while I quietly prepared to exit if the situation dictated. She failed, miserably.
You see, my EXWW's core personality was not built to fix what she broke. She lacked both the executive function and core attributes needed, such as empathy, compassion, humility, and tenacity, to name a few. I was never going to get the wife I needed and deserved, because she was utterly incapable of being that person. Once I was willing to admit this and embrace it, I filed for D.
I cannot tell you the sense of peace that decision brought me. Not only that, the correctness of it has been underscored almost daily. I hadvexcised a parasite from my life and I was no longer bleeding out. Although I struggled with lonliness from time to time, I am always at peace as I am no longer with my agent of chaos. The value of that peace is immeasurable.
Not only am I at peace, I continue to slowly improve financially while my EXWW continues to decline, making one poor decision after another. My debt is almost zero, save my mortgage, I am rebuilding my savings while building equity in my modest home.
My greatest fear in choosing D, was struggling financially. I made a half-dozen spreadsheets detailing every possible scenario in order to do right by my kids. In the end, I was catastrophizing and it always seems there is just enough money to meet our needs (think lillies of the field). In fact, it is amazing how opportunit pops up just when I need it.
The point of all this is that you will be just fine on your own if tgat is what you choose. In fact, you won't just survive, but thrive. Don't let fear hold you back.