I have found that the best predictor of future behavior is past behavior. My mother has stayed with my alcoholic father for over 50 years. I do not believe she is happy in her marriage. She basically has no spouse, no one to do things with, a housemate who is just as inconsiderate now as he has ever been. A burden.
I personally will not tolerate that in a partner. I have no room left in my life for the negativity, chaos, toxicity, abuse, selfishness or other things alcoholism and addiction bring. None of it.
My advice? Leap and the net will appear.