Great effort mate - I echo your thoughts about giving up in the 20s/30s - I'm 29 and still do really enjoy several types of booze - but the number of nights where I go out and get absolutely bladdered on a boys night out have certainly decreased over the last few years.
Good to hear that you've got specific motivation through your daughter, that should help you stick off the grog.
In my 20s I didnt have much I cared about. I had a decent job I managed to hold down with no problems and a marriage that was not all that great.
This really allowed drinking to get out of control. Wehn I was single, drinking was always associated with fun and almost no consequences.
As I got older, it became associated with fun less and less and more associated with dealing with the stress of work and to numb the miserable marriage.
Then when I did screw up and do something stupid drink was always associated.
So it went from being fun to being a liability. I realzied I couldnt control it anymore when I met someone new and realized I had something to live for. Its all my own fault. I just abused alcohol way too much.
I echo someone elses point. Alcohol is apwerful drug if you abuse it.