perhaps, but I still think that without actual brain chemical level testing the results are questionable. Maybe I'm asking for them to cut open people's heads and see what's ticking. Perhaps a cat scan of the active brain areas during the experiances and then their responses afterward to see what areas activate, and why pleasureable, instead of negative experiances are brought about.
But more to the point is that I have never liked the idea of chemicla use, be them illegial or legal ones to improve the way you see the world. There are people who need drugs to make their brain function in the same ways as everyone else, but I dont think that because "life sucks" or that the world is harsh should be an excuse to screw with your mind in order to avoid it. Avoidance is no better than apathy and apathy is bad.
Also, it brings up too many mental images of Brave New World where everyone does drugs and nobody cares whats going on cause everyone is "happy" all the time. There's actually a song about that in Secret of NIMH 2, relating to the electroshock therapy that was so prevalent in the past, it was a twisted and creepy song, especially for an animated show.