I don't advocate drugs in any form, but everyone should experience hallucinogens at some point in their life. It will change your life, for the better.
People with some personality and mood disorders can really be thrown off by psychedelic experiences. A lot of people really struggle to attain stability and control in their lives, and I'm not sure they are good candidates for people who should have their entire reality pulled out from under them.
Meaningful experiences can be had even on quite low doses so I encourage everyone to at least do some research in good faith. One good place to start is Erowid.
That's advocating drugs!