Drugs
Drugs was one of the things that made any who took it, become enamored in the euphoria that it would bring.
Some of them could even be used for medicinal use too. It was a very special thing that was nothing like other.
But it also had huge downsides as well.
Anyone that took drugs would not only be caught in its euphoretic feeling but most times, the feeling would go over the board and that would make the one using it become not only euphoric but also go crazy as well.
In one meaning, it was the most beautiful pain one could freely use on themselves.
So most sensible men in power, was able to use their wisdom to enact a law that prohibits the use of drugs without authorization from a medical practitioner who has experience about it. Even then there were limitations on how much one could use.