As an infantry veteran with multiple combat tours behind me, I have to say that psychedelics (and mushrooms in particular) are the one of the strongest forces grounding me to reality and bringing calm to my everyday life. You may be right that there's no knowledge to be found in mushrooms, but there's heaps of wisdom to be had -- about yourself, the people around you, and the universe generally -- if you're willing to listen.

Do you mean that there is no real knowledge to be found in computers?

>There's no real knowledge to be found in them.

Bit of a strong statement based on one personal experience.

I'm a psychologist and find psychedelics extremely interesting, both from personal experience, a wide range of other peoples accounts and a growing number scientific papers[1], especially Johns Hopkins University is doing some great work in that respect.

Maps.org is also a good resource.

[1]

http://link.springer.com/article/10.1007/s00213-006-0457-5

http://healthland.time.com/2011/06/16/magic-mushrooms-can-im...

http://hub.jhu.edu/2014/09/11/magic-mushrooms-smoking

Edit: There is of course a lot of (mostly) anecdotal evidence for the bad sides of psychedelics but that seems to be attributed largely to the good old "set & setting" (and of course substance purity & quality). In traditional and especially medical contexts the occurence of "bad trips" and long term negative effects is extremely rare. If you decide to try them on your own, do your homework, read up as much as you can and do them in a safe environment with people you trust.