And you want hard-core proof about the intent of that 90%. Yeah. Right. I'll work on that for you.
Think about it. If a portion of that 90% drank with the intent of abusing alcohol (ie., getting high, getting drunk), they're not real sucessful, are they? I mean, if they were, they'd show up as abusing alcohol.
Don't make such a ridiculous statement, unless you can back it up.