It's painful watching these people fail themselves. The quotes from their older selves are depressingly accurate:
'Drinking, drugging, sleeping around, it's all the same thing. You have these lines you won't cross but then you cross them and suddenly you possess the vary dangerous information that you can break the rule and the world won't instantly come to an end. You've taken a big black bold line and you've made it a little bit grey. Now, every time you cross it again it just gets greyer and greyer until one day you look around and you think, "there was a line here once, I think."'