I was a teen during the 70’s. All those things were cool things to do. At that time, casual sex partners with little or no commitment was very popular. Many of my peers smoked. I started smoking in my late teens. I didn’t begin with cigarettes, but I ended up smoking “a pack a day” at one point in my life. There were smoking ADS everywhere (magazines, billboards, etc). Marijuana, acid, heroin, and cocaine were very popular during my teen years. Many of my peers saw drugs as a cool thing to do because most celebrities were doing them; the good effects were highly advertised against the bad everywhere. The legal drinking age was 18.