I believe that they are spiritually dangerous. Keep in mind that my take is from a Christian (specifically Eastern Orthodox) perspective.
What psychadelics do is open up your "nous" (aka spiritual perception) and make you suggestible. The ideas and "enlightenment" that people receive while in this state are not their own thoughts or realizations. When people talk about seeing their spirit animal, machine elves, or other entities, they are actually seeing real entities. Most of the time these are demons taking advantage of your vulnerable state to lead you into spiritual delusion.
Does this mean they possess you? Not necessarily. These are ancient and extremely intelligent beings. They'll use whatever means appropriate to keep you from God. If that means they have to possess you, they will. If simply pointing you in the wrong direction works, they'll do that. They don't care if you worship them, contract them, believe they're faeries, or don't believe they exist at all. So long as you are lead astray, they're happy. The Screwtape Letters by C.S. Lewis illustrates this beautifully.
I've heard testimonies where psychadelics have been a stepping stone in a spiritual journey culminating in finding Christ. But in almost all the stories I've heard, they quit the substances and become Christians. Psychadelics are simply not a reliable way to find God or even truth for that matter. 99.9% of the time it will be demons feeding you lies and half-truths.
I think the only reason why governments are afraid is because of old-school, anti-drug contingents within them. Once they lose power or die off, I think psychadelics will not only be legalized, but popularized through psyops.
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If all the stories you have heard led to finding Christ then how was that not a positive thing? Real Psychedelics are not addictive and do not need to be used repeatedly. They exist for those lost in addictions. They can heal and reopen the "nous" - for those that are healthy then alright, there is no need to change. but those that are damaged must be healed to find peace in their lives.
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Very few of the stories I heard led to Christ, most did not. The few that did end up becoming Christian had a common theme: it was a stepping stone in the process of finding truth. The psychadelics themselves did not reveal Christ to these people, it was their honest search for truth that led them there. The most they did was dispel their notion of materialism. A step in the right direction, but it doesn't justify the use of these substances.
God can use sin to do good, like a judo master using his opponent's weight against them. That does not mean that we should sin nor does it mean that God wants us to sin.
Psychadelics don't heal the nous. It simply leaves you spiritually open. It is only through the process of salvation and theosis that heals the nous and brings peace.
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I am Slavic Catholic. It is an interesting thing to say using drugs is a sin. While gluttony of all forms is, did Christ not turn the water to wine? Anyway I do not think you are wrong. My experience took me through 99 negatives until 1 positive. However if we condemn it all as sin- people like me are left with only bad influences during that time- the living manifestations of demons: pharmaceutical companies and drug dealers. They are not hidden somewhere else, they are here among us. And once someone takes that path- the way back is terrifying and difficult.
I believe based on my own experience and others that I have known, certain psychedelic medicines can help some individuals recover from addictions.
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