the heart of religion is not altered states but altered traits of character. For me, then, the test of a substance's religious worth or validity is not what kind of far-out experience it can produce, but is the life improved by its use? That's the test. Now, on that score, if you remove the "religious cocoon," the experiences don't seem to have much in the way of discernible, traceable effects.
Huston SmithBuilt into human makeup is a longing for a 'more' that the world of everyday experience cannot requite.
Huston SmithWith mind distracted, never thinking, "Death is coming," To slave away on the pointless business of mundane life, And then to come out empty--it is a tragic error. (116) trans by Robert Thurman
Huston Smith