You may speak from experience, but your data conflicts with tens of millions of people who have taken various psychoactive medications for a myriad of psychological conditions for decades, myself included.
I'm sorry but you're comparing apples and bananas here, friend. I'm pretty sure you're not being prescribed psychedelics or tripping off of your adderall. The mechanisms behind psychedelics are very poorly understood, as are most behind therapeutic psychoactive drugs but I am fairly certain that they are not the same.
burnte might be speaking of marijuana, as it is psychoactive
Your reasoning seems to be based entirely on the assumption that there "being a chemical component involved that acts on several neurotransmitter systems" translates to not being healthy. I am not sure that that follows.