Some people can get away with the mental and physical damage they cause, others can’t.
I for one, have not taken drugs since June this year. What I took was a lot of MDMA mixed with a lot of alcohol and the results were ugly. I made an ass out of myself, first and foremost. But the lowest moment was getting home at 8am the next morning to my housemate making cupcakes and starting her day and I was fucked out of my mind trying to speak to her. I slept for 8 hours and woke up sure I was going to die. I didn’t sleep properly for a week and ended up in hospital with alcoholic inflammation to my gastro tract and a middle ear infection, not to mention the mental anxiety and personal disappointment. Was the short high worth it? Hardly.
I’m not judgmental of my friends who experiment with drugs because I have for years, I guess I’ve just grown out of it and don’t see it as a status worth achieving. If it hasn’t mentally upset you yet, it will one day.