Why Is He Drunk?

We never know what went wrong. We never hear any background, really nothing. So it is sort of a mystery, yow, why is he drunk? He doesn't want to talk about it. And then it comes down to standing naked in the window. His wife calls him back to ad. That's the first time when we learnd something about him. Yet, as an alcoholic addect, looking back it, if i could only go back to that, right,. The before when it was better, yes?