FWIW in this thread, I read lots, have worked with drug users in the past and find it interesting that addiction is considered an illness, how it might happen and why (peer pressure, even if not intentional or for acceptance reasons or some such can play a big part) and a shame that people in this day of internet and instant news are so judgemental without knowing all the facts. Speculation is rife as it can often be when having a conversation with a person in real life, just when its posted online it makes it so much more permanent.
Am I mistaken to hope for a decent discussion (if anyone wishes to discuss) rather than a lynch mob or snap judgement opinion as so often happens on forums. I know it can happen as I've been part of some insightful, intelligent conversations on forums. Drug addiction could happen to someone you know (its happened to people I know) and having some kind of insight into what might cause them to spiral down into it could possibly help you spot the warning signs early on or understand its not always so cut and dried as it might seem to you if you've not ever been in that situation. Addictions have many forms, not only drugs. Anything you take on board and store away in your memory could one day be a vital thing to help someone you care about be they suffering an eating disorder, a drink problem, an addiction to online gaming or a gambling habit racking up debts. Any of those and many others can cause a person huge problems we can't always comprehend.