Chris
I used to smoke pot and my wife currently does daily. I do believe it should be a personal choice what people want to do. But, I don't know anyone that has smoked pot and stopped there. Since I was a kid smoking pot, if there was anything better around, everyone I knew would rather have that. A gateway drug? I can't really call it that but...I would like to know at least one person that has ruefully only smoked pot.
As my wife always says, she has never smoked pot and woke up wondering who was sleeping next to her. But, in her youth, she can't say the same thing about drinking.