I feel very comfortable stating with 100% certainty that your claim that the study said 85% of all people report being marijuana users (exact words: "around 85% of Americans use marijuana alone") was completely and outrageously inaccurate. It's humorous but a touch sad that you can't admit you were completely and utterly wrong. Lay off the stuff, clear your head, and re-read the report, dude.
It's also charming that you cite erowid.org as a reliable unbiased source. I am familiar with the site and have read it. It is a radical pro-drug site.