If the job is that bad that you have to drink every day you do it, you need to find a new job. I'd go on to say that pilots don't just drink, they are brought up in environments where people drink out of control and binge-drink, and they think it's normal because they spend so much time around this and these people. Many come from the military where drinking and activities centering around alcohol were the norm, and they keep thinking that the norm is to drink every day, whether in excess or not. Sure, very few are drinking to the extent that Denzel's character was, but far more think it's normal to drink at every dinner meal. I enjoy a good beer, a nice scotch, and so on, but on a trip? Not worth it. Never worth it.