Yeah. I used the same schpeel (or something similar), with my kid when we found out she was smoking at 15. You know ~ it's not heroine or cocaine, but it can make you content to just do nothing, when you'd be happier doing something.
Sometimes "do nothing" is exactly what we need in this crazy, hectic, busy world. Sometimes it's good to be bored. But keep it in check. Also, I have no problem with adults partaking, but kids with their developing brains ~ that's another story in my mind.