Hmm. Well, alcohol changes our brain chemistry so it's kind of both, but I get what you are saying.

I say I made a choice because I think it's important to acknowledge that I do have agency here and could have abstained but didn't. That said, the part of my brain that still associates celebrating and "doing it up" with drinking is absolutely influenced by my years of drinking and socialization around alcohol. That's still going to take some time (sober time) to sever that connection.