[Bongosan]

There have been some very good posts about this subject.
As a nurse and a paramedic I thought I would weight in.
First my main point is that of everything in "moderation". Its not just alchohol or drugs, look at the "obseity" epidemic. Too much sugar and to little excersies can kill ya too!
Know your limits. If you can't handle drugs or alchohol then don't do them!
I can't handle alhchol, one is never enough, so I don't drink! My wife can handle it so she still has the occasional drink.
As far as the "hard drug" using person saying some harsh words and making someone cry...sigh... that is only to be expected. When you are addicted to something or on a substance your empathy ability disapears!!
A final ranting, you can not change someone only they can change themselves. Most addicts have to hit rock bottom before they can change. So worrying about everyone else and what you can do to help them is pointless to put it politely. It seems harsh but there is always a choice, always! when it comes to drinking or drugs!
Anyway good luck.