How do you feel if you go without a bottle of wine one or two nights, OP?
My DM used to drink very heavily, like you - a bottle of wine a night, sometimes more.
This carried on throughout my childhood - I can't ever remember it not being what she did, She now drinks less, but still a lot more than she should.
Her skin is shot to pieces - she smoked for years, too, which contributed somewhat, but the alcohol gave her skin a strange, spongy appearance.
I'm sure it's affected her brain and memory too, she repeats herself endlessly sometimes and can be very snappy. She was never like this when I was little - my sister and I put it down to the alcohol gradually changing her personality (for the worse) over the years.
I dread to think what state her liver is in.
If you think you are not alcohol dependent, you might well be deluding yourself, as my DM has been doing for the whole of my life.