I don't do drugs, but as far as pot goes I don't really have a problem with people that do it as long as it doesn't involve me in any way or put me at risk.
What I don't like are those people that seem to want to go out of their way to show people they smoke pot, glorify it, continually talk up its virtues when it's obvious they just like to get high (Which is to say just about everybody that talks up its virtues because nobody really gives a damn if you can make clothing out of it or if it can be used for therapeutic reasons when there are better things out there. I actually respect people more that just admit they like getting high off of it.), or feel like they have something to prove. There just gets to be a point where I'm thinking, "Yes, we know you like smoking pot. We all know about that already because you have made that abundantly clear numerous times. Good for you. Now can shut up about it."