@KaBoom - I don't quite understand why someone would use sympathomimetics recreationally either. I kind of don't even understand why someone would use them for weight loss. I know people get really desperate to lose weight but it's not worth it at the expense of their overall health.
I'm actually a little surprised people don't abuse these kind of drugs for the performance enhancing aspect. I would imagine that sympathomimetic bronchodilators could help a runner achieve a faster time.