If you've never seen a mean, angry, abusive pothead, consider yourself lucky. My AH gets nasty, mean, and abusive when he can't get pot. Smoking the pot might mellow him, but going without makes him beligerent. This is also an effect pot has on him.
Having lived through the nightmare of watching my kids get clothes from the Salvation Army while AH takes the $ for pot, seeing them go without food and milk while he gets stoned, I will always despise pot. Having said that, my sister was the world's biggest pot fan, who never had a problem with it and used as responsibly as the most responsible social drinker.
Nonetheless, my negative experience has turned me against pot. But as long as you aren't in my face with it, or doing anyone dirt for it, I'll never judge you. (Some of my best friends smoke pot and respect me and won't use around me, which is cool.)