Talk-Polywell.org

...while heroin may get numbers near the top, research has shown that most people don't really like heroin when they try it, and only a small minority like it well enough that they will continue using it. For the small minority that really like it, it may be hugely addictive. For the majority of us, however, it will have little to no appeal as a recreational drug.

http://www.druglibrary.org/gh/how_addic ... heroin.htm