That being said, getting stoned or drunk on your own time shouldn't be anyone elses business but your own.
And for the record, I did drugs one time. I smoked some pot in college with my roommate. That was over 20 years ago. It was a bad experience I don't have any desire to repeat it, nor do I have any desire to demand other people be prohibited from using it if they decide to do so on their own personal time.
I think they used to call that "freedom."