Welcome zen! I can only offer my story. I drank a lot in college like most of the people i hung out with. I did some really crazy stupid things and blacked out many times. Through the years since those days i have continued to drink mostly on the weekends but for awhile weekends would get longer and longer. A couple of years ago i quit drinking because i felt that it was affecting me badly. After about a year i figured i was ok to drink in moderation. I was ok for awhile but slowly got back into old habits.
I think about drinking all the time . . .always thinking about when i can have time for a few drinks. It became somewhat of an obsession. What i am getting at is it didnt happen overnight. It progressed. I decided that it had to stop. I dont want this to run my life.
If you are at a point where drinking is negatively affecting your life then maybe you should think about quitting. There is a lot of support here if you'd like to give it a try! Good luck to you!