[Smogger]

Finding recreational users or abusers of drugs who haven't used marijuana will be just a bit easieer than finding an honest man.

But considerably easier then finding recreational users of drugs who haven't used liquor or tobacco.

[thegreatbeast]

Divining which came first the pot smoking or the other drug usage is beyond the scope of most surveys. It would be require in-depth psychological interviews that are rarely done in such scope as would be needed to make meaningful observations about this chicken or the egg situation.
My point, and I restate it unapologetically, is that marijuana is/was used by an amazingly large percentage of those people who abuse(d) other drugs. Anybody want to try to refute that? Then why is it so hard to accept?