It's not. We don't arrest people for relaxing and enjoying life.
THis reminds me of the interview I saw with Ted Nugent, who has never done drugs and says he only drank one time. They asked him, if he wasn't into drugs, why his band's first album was called "Journey to the Center of Your Mind", and he said "Well I thought....ok, yeah, introspection is a good thing."
Why do we make something that is used for relaxation and enjoying life, illegal?