Not in the "War on Drugs" sense. Each to his own. And one can't argue with evident medical benefits, right? As for recreational use, mind expanding substances can offer wonderful insights into the world and oneself. But to actually change anything, one has to internalize and act on those insights and this can only be done with a sober brain. I've met too many people who get hooked on getting more and more insights, instead of making a reality of what they've learned. They themselves think they are changing for the better but their actions show that they are still the same.