There's already been a social experiment into whether legalising heroin would affect people. It's called the time when heroin was legal.
Guess what?
It affected people.
Not all drugs should be legalised. Marijuana and Ecstacy (ESPECIALLY Ecstacy) probably should be legalised, to maintain control over dealers, increase taxes, reduce incarceration etc. etc. Harder, more addictive drugs, probably shouldn't be legalised, because people have this weird tendency to become dependent on drugs that are not only incredibly physically addictive, but also make you feel awesome. In a consistent society, we would also make alcohol illegal, as it is highly addictive and relatively dangerous. But goddammit, I love drinking, so screw that.
Guess what?
It affected people.
Not all drugs should be legalised. Marijuana and Ecstacy (ESPECIALLY Ecstacy) probably should be legalised, to maintain control over dealers, increase taxes, reduce incarceration etc. etc. Harder, more addictive drugs, probably shouldn't be legalised, because people have this weird tendency to become dependent on drugs that are not only incredibly physically addictive, but also make you feel awesome. In a consistent society, we would also make alcohol illegal, as it is highly addictive and relatively dangerous. But goddammit, I love drinking, so screw that.