pot heads? Please, elaborate on your reasoning...

Do you call the young child with glioma brain cancer, severe epilepsy and other ailments using cannabis to save their lives, 'pot heads' too? 

I'd be curious to know what you're basing that ridiculous opinion on. What about Carl Sagan, or others? Yes, he was a pothead too. Do you need a list of other 'potheads'?

Are you a medical user of alcohol, beer or wine perhaps? I'm sure you have a prescription for that 'drug', but does that make you a liquid druggy? Unlikely, since you still have some brain cells left...

You're also conflating use, with abuse... A common, myopic and nescient view.