This all goes hand-in-hand with the feelings derived from the drug, the need to fit in, and so on. Does that make sense?
If someone realizes the inherent dangers
, it's fair to say that they probably also understand the inherent dangers of other drugs. And if they choose not to smoke, then it's more likely they won't use other harder drugs. Again, this is not always the case. I also agree that the people you hang around with play a significant role in what you will do.