The truest reason the feds keep weed and psychedelics illegal is because they free you from the confines of their systematic methods of mind control.

I've had positive experiences with them when I was younger but I believe you can reach the same breakthroughs through deep thought and meditation.

I personally don't think any substance should be illegal as adults should be free to perturb their consciousness in any way they wish, but I don't think they are actually necessary. If you raise a child correctly they won't need to douse their brain in exogenous chemicals to have a psychedelic experience they will be able tap into the parts of their brain that make those experiences possible in the first place. That goes similarly with, stimulants, opioids, etc. The only reason these substances work is because the receptors in our brains exist to interact with them they can all be produced naturally through different means we just don't live the lifestyle necessary to activate the production of them. Then anti depressants are prescribed to try to balance everything out but those have negative side effects of their own.

I think one of the main reasons these substances are illegal is it's hard to monetize them but that's changing now with marijuana, and even psilocybin and mdma are being used to treat people with PTSD. I think within our lifetimes you will see a host of psychedelics being produced by drug manufactures. Ultimately I believe all of these substances can be beneficial when used as medicine but medicine is used to treat the sick and it's probably best to avoid getting sick and requiring them in the first place and even then using them as little as possible. Alan Watts had one of the best quotes about psychedelics which is "Once you get the message, hang up the phone."