I definitely noticed myself becoming more open (as mentioned in the article), much more laid back and less neurotic (though the article mentioned this not being affected), and just a calmer, more rational, loving person in general. I also noticed a deeper appreciation of nature and art that stemmed from experiences while on hallucinogens. I also like to think I've grown in creativity, but that may be the result of other experiences and goals in my life. As a previous commenter mentioned, the drugs help you start to explore the ideas of how everything is related, how people all have the same experiences of consciousness, etc and you begin to appreciate how tied together our world and ecosystem is. Those are just a few things I've noticed on my part. I really believe more people thinking in this manner would be highly beneficial to humankind, though I'm biased :)