The idea you should prevent people taking drugs in the first place is even more dangerous, as history has proven.
It doesn't. That's the point.
Unfortunately, this is what history tells.
Banning drugs has NEVER ever stopped anyone using them. It's "Human Nature".
Why is it so hard to just remain realistic and just admit that wherever there's drugs, people will use them? Why is it so hard to at least try and give people proper education about both the pleasures and the risks?