I can take a dose that would render most people incapacitated. How does anyone know what they can handle?
It is sold by clerks. They don't know the dosage. It's like drinking a gallon of whiskey versus a shot of it.
It is too dangerous to just let anyone use it.
You can get in a car and kill someone if you take the wrong strain. And now they have edibles. You can eat a candybar and be out like a light if you don't know what you are doing. It is too strong for anyone who has a jones for getting high to just decide the amount they want to get high with.