THC causes mental disorders, not marijuana itself. Farmers grow strains high in THC due to a lack of regulation on the business side, and a lack of education on the consumer side. Non-THC concentrated stains, that are higher in CBD, have shown many health benefits, including mental health benefits. Imo, it should be legalized and heavily regulated. I won't touch it personally, but I don't believe anyone has the right to tell a full-grown adult what they can/can't inhale if it doesn't infringe on the rights of others.