No we didn't all know this, you can speak for yourself and I can speak for myself. It is glamourised and seen as cool - as well as being harmless and fun and rebellious too. I think a lot of people only realise the actual harm caused by drugs later in life - i.e. the real cost of the cocaine trade, and even the cannabis trade, which is seen as a harmless drug.
anyway, don't want this to turn into a derailment. But FACT, teenagers don't quite understand what they're getting into A LOT of the time, if they did the world would be very different. Rape and murder are black and white - going to live a life somewhere else, somewhere my friend who's already there says is great, is a whole different thing.(Shamima & friends already had a friend there who encouraged her to go join her)