I explicitly excepted marijuana - and I never said "only", Have fun debating the voices in your head.
(Good to hear a Drug Warrior acknowledge that pot, and the occasional use of other drugs, is not deadly, though.)
It would help if you would read my posts, I never gave a personal opinion stating that anything is or is not deadly.
But not everyone agrees with your reasons for stopping, or never starting, or temporarily discontinuing drug use, the law does influence countless people, and in many behaviors.