I hate to say it, but I haven't met many people in SR or in the rooms that have said it was ever worth it. To date, not one person has ever made the case to me that it was worth staying. Not saying addicts don't deserve romantic love. But the beauty and wonder and bedrock of a relationship is security. Alcoholism is the opposite of that. Even in long term sobriety they are just a drink away from emptying the bank account, getting into a car accident, dying from a fall, dying from poisoning, losing their job. Yes these things can happen in ANY relationship. It's just that with an alcoholic, the chips are always stacked against you.
I think deep in our hearts we may know it is never worth it, as to stay is to sacrifice and RISK our own life and happiness. But there are still reasons we do it.