Very true, but the key word is abuse. What about those who abuse cigarettes, alcohol, caffeine, food in general? They are all rotting alive.
Microdoses are very interesting, if that small amount of the substance can improve your senses and influence cognition it should be openly available. Our lives are so short that if we could really accomplish more just by taking a small amount of a chemical substance once every few days it would be great. I'm not against drugs or any other substance, it was all made for our benefit and stupid people will overdose and die, that's life. Stupid people also drive carelessly and kill themselves, but we aren't banning cars.