tell kids to stick with pot and not do PCP...

PCP is closely related in its effects to ketamine, which on recent (thoroughly confirmed) investigations seems to be one of the most effective antidepressants there is. It can't be easy to do objective research on the beneficial effects of PCP, but I'd bet there are significant ones.

Ketamine is one of the few drugs I haven't tried that I'm still curious about. It would take something like terminal cancer to make me try pot again.