Did you ever notice how the shroomers have a different look in their eyes than the acid heads? There's a lot more warmth to the former as you noted, but there's a tendency to believe really far out things. One friend of mine was convinced she was immortal so she worried a lot about how she was going to replenish the sun with hydrogen so it didn't burn out. The acid heads have a look in their eyes like they are lost in a void and are struggling to get back.
Edit: I should note I'm talking about people who do a lot of mushrooms. For example, my friend lived on a commune in England for several years that did high doses of mushrooms on a weekly basis as a community bonding thing (like a Sunday church ritual)
Edit: I should note I'm talking about people who do a lot of mushrooms. For example, my friend lived on a commune in England for several years that did high doses of mushrooms on a weekly basis as a community bonding thing (like a Sunday church ritual)