It was to me for a while. And a bottle most nights has been the norm for me for a good few years. With no obvious ill effects, and no hangovers.
I think there is a difference between physical addiction and psychological addiction and I would say I have been psychologically addicted for 20 years but definitely not physically.
Even if there is a bottle open I stop after a bottle or sometimes a bottle and a third, often leaving a glass half full when I go to bed. I have had a very stressful 3 years when going without for even one day seemed herculean which I don't like. So as life has now settled down, I have decided to do a reset.
I am therefore doing dry January, not as an excuse to go back to the same level afterwards but to reset my 'norm'. The only 'side effects' have been not sleeping well for the first 5 or 6 days which has now settled down. I'm now at nearly 2 weeks which, at a guess, is the longest without alcohol for over 20 years.
I have a rack full of wine, vodka, gin, martini, port and other things still in the cupboard. Am I tempted - yes definitely, I miss it and find evenings boring. Have I craved it - not at all.
Do I feel better for not having it - Not yet. My sleep is better but still crap (one of my main reasons for drinking). I haven't lost any weight and don't have more energy.
I live alone so mostly drink alone. If I do go out I'm usually driving and have no problem not drinking.