SOTORIOS - I perceive that you come from a section of society where drug use and abuse if not a problem. If so, lucky you. You are fortunate enough, by an accident of birth, to have landed in a family who have taught you good values and to respect yourself and others around you.
Sadly, others are not so lucky. They do not possess the guidance and family framework you have had, so they live miserable unfulfilled tragic lives which are a world away from the lifestle you enjoy.
For such people, drugs are a means to blot out a nasty and fruitless reality, a way to escape briefly into a world that doesn't hurt, and doesn't stretch on into a miserable painful infinity. Of course, this path leads to addicition, and often death, but no-one in this situation is able to look ahead and see a future of any sort, they are aimply not equipped to think like that. Life is a day-to-day monotony to be endured and escapred from, if and when possible.
So look around you. Be grateful for who you are and where you are. be grateful that the accident of birth didn't lad you in circumatnces where sticking needles in yourself provides an attractive alternative to your daily life.
And when you've done that, and seriously appreciated your life - spare a thought for those less fortunate, and less able than you are, and find some compassion. Life is not black and white.
Think about it.