- If heroine were legal, I still wouldn't use it but why should I care if someone that already does use it can now do so legally, safely and without threat of imprisonment?
I think most people think this way. You can still campaign against hard drugs, such that most people will still think it is a bad thing. This way you keep the drugs out of the underground economy and work to reduce use. You might even entertain the possibility of compulsory registration when buying hard drugs. If you keep the prices low, already users will not complain about having to register, but new users will be repelled by the prospect of having to register just to use a certain drug. And you'll have a register with most users, which you can use to contact them and give them a go at rehab.
Mushrooms are currently being used as possible treatments to depression, anxiety, and cluster headaches. Studies have shown that people have had a mushrooms trip have a more positive outlook on life. There is no physical addiction, it is one of the least "damaging" physically or mentally and mentally you find yourself straying away from doing it again for awhile. I'd say that is the complete opposite of abusive, possibly even beneficial :) http://www.miqel.com/clusterheadaches/cluster-head-mushroom....
http://disregardeverythingisay.tumblr.com/post/18459413267/s...
http://www.usatoday.com/news/health/story/health/story/2012-...