Like so many things, this too is being ruined by the overzealous user/grower. Where years ago you could smoke a joint, get a healthy fit of laughter, feel completely relaxed, and then enjoy a good meal and sleep, the stuff nowadays has been bred to such extremes that it completely knocks you out of this world. I can imagine this leads to many problems, putting the legitimacy of the substance under pressure, turning public opinion against it, and forcing governments to step in by enforcing stricter regulations or even a total ban.