Used to be a pot head.

Dated a pot head.

Former Bartender who have seen many people fight, fall off bar stools and bust their head wide open, get sickingly drunk, and become lethargic alcoholics.

Pot smokers are sometimes slack asses! It depends on the person. However the potency of marijuana I'm sure is 3x's what it was when I was a smoker. It slows down your brain (litterally - look it up)and is sometimes helpful in creative endeavors.

I dated a pot head in college. Very intelligent guy. Just a pot head and he had a serious lack of motivation. By that time I had quit. So we ended up ending it.

I think pot heads are harmless but also could have a serious effect on a relationship.

IMHO