Hi Emwell,
Yes, I wasn't that clear in the original post. It's about three bottles a week. I used to do pubs with friends but nowadays life is quieter. I have dinner with my wife, who has one glass of wine. I used to drink a lot, which was the culture in Northern England, but I don't feel that need now.
The problem is more to do with depression/anxiety which is present at some level most of the time.
Your last question is a difficult one. I would have to say that over the years drinking has improved my life overall, definitely socially, but occasionally I have had some bad hangovers. I have talked with other people with anxiety disorders and they say that hangovers are a problem for them as well. I guess it's because we are extra sensitive to the chemicals.
I'm following Hamstergirl's advice and taking some alcohol free time. If there is an addiction problem kicking in, I should be able to feel it soon enough.
Good luck.
Myzen