It's simple and you know the answer. If we even decriminalize cannabis sativa L, not only will we be allowing the use of a dangerous psychotropic depressant, but it's brother cannabis sativa will have to be legalized, threatening nearly every known commercial enterprise from petrochemical to natural fiber textile to nutritional agriculture.
And we can't have that shit, can we? GOTTA MAKE A MUHFUGGIN DOLLA, NO'M SAYIN???