You never heard anything about alcohol? It's a drug (caloric content notwithstanding).
The month I graduated a movie called “The Man With the Golden Arm was released. I think I remember Frank Sinatra was in it. That was the first time I can remember hearing about heroin. Many of us liked the sound track so well we bought the album. Your alcohol argument is a straw man as alcohol is a LEGAL drug. If you want to continue pushing the use of illegal drugs I want nothing more to do with you.