I was sick and tired of being sick and tired.
That said, I had a moment in my 30s when I decided that for the first time that I would like to have a partner, but I realized that I wouldn't want myself as a partner, which would never do. It was that 'ah ha' moment that gave me clarity on what the drinking was really costing me in terms of lifelong happiness. So I stop drinking and started working on myself to be the type of person that I would want to have as my own partner.
I improved me for my own benefit though, not b/c I was actively trying to find an SO. In fact I held off on dating for over a year. I was lucky in that I met "the one" during that self improvement period and he recognized that I was worth waiting for.
Please don't wait for dramatic tragedy. It is a progressive disease, and in the meantime your enjoying only a fraction of life's riches. If you know in your soul that you need to stop, why not make the choice to stop and stay stopped now.
Good luck!