I drank as a part of my daily ritual to avoid and isolate. I would buy my beer, some cigarettes and pot if i could and just sit there on the computer all day playing games. It would make me feel so good and was never complete without the alcohol. I would feel involved with the online community in the games I would play.
I do recall experiencing more than normal daily anxieties and my sleep would suffer from it. Overall as an alcoholic, I have decided that it isn't an option for me to 'feel'. It also badly compromises my judgement in doing things I know I shouldn't or normally wouldn't do, like other drugs or drink more than I should. My behavior also got more strange as it interacted with my current medications. It did keep me from panicking for months but with a heightened overall sense of anxiety if that makes sense. But it is a slippery slope for me to drink at all anymore. So I don't.
People who drink to 'feel' are only drinking to 'feel different.' Identify with yourself if you are an alcoholic first off, if you have PTSD, it is going to be a question of how in control of your life you are already. The notion that one with PTSD has to 'drink to feel' simply scares me.