It's just that our imagination gets boosted, nothing else. I wouldn't call any tripping spiritual because I have yet to see a person changed for good after doing "spiritual" substances for a quite some time. Same applies to every drug out there. Sober life is the best life. At least you are always responsible for your acts and can't blame any drug for your behavior.
Thanks for the article @kyriacos
RE: "Spiritual Drugs" Are Bullshit